Merge branch 'development' into addAnalyticsToDevToolsPages

* development: (51 commits)
  Publish
  Updated CHANGELOGS
  Updated CHANGELOGS
  Update packages/sol-compiler/CHANGELOG.json
  Update packages/sol-compiler/CHANGELOG.json
  Move from devDep to dep
  Fix linter
  Update CHANGELOG
  Re-run yarn since fails again on first run
  Add PR numbers
  Omit remapping in compiler settings equality checks
  Omit remapping in compiler settings equality checks
  Fix a bug when ast and legacyAST were not present in the artifacts even if requested
  Update yarn.lock
  Remove the bin_paths and fetch the solidity release list from github repo
  Remove postinstall hack
  Fix the undefined opts bug
  Fix sol-compiler bug with remappings causing smart recompilation to now work
  re-add postinstall hack
  Fix deps versions
  ...

255 files changed, 3714 insertions, 1269 deletions

diff --git a/.circleci/config.yml b/.circleci/config.yml
index f6e028ea0..38fb2624a 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -16,7 +16,7 @@ jobs:
                   command: sudo npm install --global yarn@1.9.4
             - run:
                   name: yarn
-                  command: yarn --frozen-lockfile --ignore-engines install
+                  command: yarn --frozen-lockfile --ignore-engines install || yarn --frozen-lockfile --ignore-engines install
             - setup_remote_docker
             - run: yarn build:ci:no_website
             - run: yarn build:ts
diff --git a/.github/autolabeler.yml b/.github/autolabeler.yml
index 321ec18a4..fb5b00aa4 100644
--- a/.github/autolabeler.yml
+++ b/.github/autolabeler.yml
@@ -2,6 +2,7 @@ python: ['python-packages']
 contracts: ['contracts']
 sol-doc: ['packages/sol-doc']
 sol-resolver: ['packages/sol-resolver']
+contracts-gen: ['packages/contracts-gen']
 sra-spec: ['packages/sra-spec']
 subproviders: ['packages/subproviders']
 contract-addresses: ['packages/contract-addresses']
diff --git a/contracts/asset-proxy/CHANGELOG.json b/contracts/asset-proxy/CHANGELOG.json
index 932cf0752..de7e90d66 100644
--- a/contracts/asset-proxy/CHANGELOG.json
+++ b/contracts/asset-proxy/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "version": "1.0.3",
+        "changes": [
+            {
+                "note": "Fake publish to enable pinning"
+            }
+        ],
+        "timestamp": 1549504360
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1549373905,
         "version": "1.0.1",
         "changes": [
diff --git a/contracts/asset-proxy/CHANGELOG.md b/contracts/asset-proxy/CHANGELOG.md
index abff2e53d..fcf5202c6 100644
--- a/contracts/asset-proxy/CHANGELOG.md
+++ b/contracts/asset-proxy/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.4 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v1.0.3 - _February 7, 2019_
+
+    * Fake publish to enable pinning
+
+## v1.0.2 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v1.0.1 - _February 5, 2019_
 
     * Dependencies updated
diff --git a/contracts/asset-proxy/compiler.json b/contracts/asset-proxy/compiler.json
index 70d4c6b20..aab143bad 100644
--- a/contracts/asset-proxy/compiler.json
+++ b/contracts/asset-proxy/compiler.json
@@ -3,10 +3,7 @@
     "contractsDir": "./contracts",
     "useDockerisedSolc": true,
     "compilerSettings": {
-        "optimizer": {
-            "enabled": true,
-            "runs": 1000000
-        },
+        "optimizer": { "enabled": true, "runs": 1000000 },
         "outputSelection": {
             "*": {
                 "*": [
@@ -20,12 +17,17 @@
         }
     },
     "contracts": [
-        "IAssetData",
-        "IAssetProxy",
-        "IAuthorizable",
-        "ERC20Proxy",
-        "ERC721Proxy",
-        "MixinAuthorizable",
-        "MultiAssetProxy"
+        "@0x/contracts-erc20/contracts/test/DummyERC20Token.sol",
+        "@0x/contracts-erc20/contracts/test/DummyMultipleReturnERC20Token.sol",
+        "@0x/contracts-erc20/contracts/test/DummyNoReturnERC20Token.sol",
+        "@0x/contracts-erc721/contracts/test/DummyERC721Receiver.sol",
+        "@0x/contracts-erc721/contracts/test/DummyERC721Token.sol",
+        "src/ERC20Proxy.sol",
+        "src/ERC721Proxy.sol",
+        "src/MixinAuthorizable.sol",
+        "src/MultiAssetProxy.sol",
+        "src/interfaces/IAssetData.sol",
+        "src/interfaces/IAssetProxy.sol",
+        "src/interfaces/IAuthorizable.sol"
     ]
 }
diff --git a/contracts/asset-proxy/package.json b/contracts/asset-proxy/package.json
index 101109a80..def8eead7 100644
--- a/contracts/asset-proxy/package.json
+++ b/contracts/asset-proxy/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-asset-proxy",
-    "version": "1.0.1",
+    "version": "1.0.4",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,10 +29,12 @@
         "profiler:report:html": "istanbul report html && open coverage/index.html",
         "coverage:report:lcov": "istanbul report lcov",
         "test:circleci": "yarn test",
+        "contracts:gen": "contracts-gen",
         "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol"
     },
     "config": {
-        "abis": "generated-artifacts/@(ERC20Proxy|ERC721Proxy|IAssetData|IAssetProxy|IAuthorizable|MixinAuthorizable|MultiAssetProxy).json"
+        "abis": "./generated-artifacts/@(DummyERC20Token|DummyERC721Receiver|DummyERC721Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|ERC20Proxy|ERC721Proxy|IAssetData|IAssetProxy|IAuthorizable|MixinAuthorizable|MultiAssetProxy).json",
+        "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
         "type": "git",
@@ -44,9 +46,10 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/protocol/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^2.0.0",
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/sol-compiler": "^3.0.0",
+        "@0x/abi-gen": "^2.0.2",
+        "@0x/contracts-gen": "^1.0.1",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/sol-compiler": "^3.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -63,18 +66,18 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^4.0.0",
-        "@0x/contracts-erc20": "^1.0.1",
-        "@0x/contracts-erc721": "^1.0.1",
-        "@0x/contracts-test-utils": "^3.0.0",
-        "@0x/contracts-utils": "^2.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/base-contract": "^4.0.2",
+        "@0x/contracts-erc20": "1.0.2",
+        "@0x/contracts-erc721": "1.0.2",
+        "@0x/contracts-test-utils": "^3.0.3",
+        "@0x/contracts-utils": "2.0.1",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "ethereum-types": "^2.0.0",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/contracts/asset-proxy/src/artifacts.ts b/contracts/asset-proxy/src/artifacts.ts
new file mode 100644
index 000000000..d82c0537e
--- /dev/null
+++ b/contracts/asset-proxy/src/artifacts.ts
@@ -0,0 +1,33 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+import { ContractArtifact } from 'ethereum-types';
+
+import * as DummyERC20Token from '../generated-artifacts/DummyERC20Token.json';
+import * as DummyERC721Receiver from '../generated-artifacts/DummyERC721Receiver.json';
+import * as DummyERC721Token from '../generated-artifacts/DummyERC721Token.json';
+import * as DummyMultipleReturnERC20Token from '../generated-artifacts/DummyMultipleReturnERC20Token.json';
+import * as DummyNoReturnERC20Token from '../generated-artifacts/DummyNoReturnERC20Token.json';
+import * as ERC20Proxy from '../generated-artifacts/ERC20Proxy.json';
+import * as ERC721Proxy from '../generated-artifacts/ERC721Proxy.json';
+import * as IAssetData from '../generated-artifacts/IAssetData.json';
+import * as IAssetProxy from '../generated-artifacts/IAssetProxy.json';
+import * as IAuthorizable from '../generated-artifacts/IAuthorizable.json';
+import * as MixinAuthorizable from '../generated-artifacts/MixinAuthorizable.json';
+import * as MultiAssetProxy from '../generated-artifacts/MultiAssetProxy.json';
+export const artifacts = {
+    DummyERC20Token: DummyERC20Token as ContractArtifact,
+    DummyMultipleReturnERC20Token: DummyMultipleReturnERC20Token as ContractArtifact,
+    DummyNoReturnERC20Token: DummyNoReturnERC20Token as ContractArtifact,
+    DummyERC721Receiver: DummyERC721Receiver as ContractArtifact,
+    DummyERC721Token: DummyERC721Token as ContractArtifact,
+    ERC20Proxy: ERC20Proxy as ContractArtifact,
+    ERC721Proxy: ERC721Proxy as ContractArtifact,
+    MixinAuthorizable: MixinAuthorizable as ContractArtifact,
+    MultiAssetProxy: MultiAssetProxy as ContractArtifact,
+    IAssetData: IAssetData as ContractArtifact,
+    IAssetProxy: IAssetProxy as ContractArtifact,
+    IAuthorizable: IAuthorizable as ContractArtifact,
+};
diff --git a/contracts/asset-proxy/src/artifacts/index.ts b/contracts/asset-proxy/src/artifacts/index.ts
deleted file mode 100644
index 7f3060815..000000000
--- a/contracts/asset-proxy/src/artifacts/index.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-import { ContractArtifact } from 'ethereum-types';
-
-import * as ERC20Proxy from '../../generated-artifacts/ERC20Proxy.json';
-import * as ERC721Proxy from '../../generated-artifacts/ERC721Proxy.json';
-import * as IAssetData from '../../generated-artifacts/IAssetData.json';
-import * as IAssetProxy from '../../generated-artifacts/IAssetProxy.json';
-import * as IAuthorizable from '../../generated-artifacts/IAuthorizable.json';
-import * as MixinAuthorizable from '../../generated-artifacts/MixinAuthorizable.json';
-import * as MultiAssetProxy from '../../generated-artifacts/MultiAssetProxy.json';
-
-export const artifacts = {
-    IAuthorizable: IAuthorizable as ContractArtifact,
-    IAssetData: IAssetData as ContractArtifact,
-    IAssetProxy: IAssetProxy as ContractArtifact,
-    ERC20Proxy: ERC20Proxy as ContractArtifact,
-    ERC721Proxy: ERC721Proxy as ContractArtifact,
-    MixinAuthorizable: MixinAuthorizable as ContractArtifact,
-    MultiAssetProxy: MultiAssetProxy as ContractArtifact,
-};
diff --git a/contracts/asset-proxy/src/wrappers.ts b/contracts/asset-proxy/src/wrappers.ts
new file mode 100644
index 000000000..f8cd342c0
--- /dev/null
+++ b/contracts/asset-proxy/src/wrappers.ts
@@ -0,0 +1,17 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+export * from '../generated-wrappers/dummy_erc20_token';
+export * from '../generated-wrappers/dummy_erc721_receiver';
+export * from '../generated-wrappers/dummy_erc721_token';
+export * from '../generated-wrappers/dummy_multiple_return_erc20_token';
+export * from '../generated-wrappers/dummy_no_return_erc20_token';
+export * from '../generated-wrappers/erc20_proxy';
+export * from '../generated-wrappers/erc721_proxy';
+export * from '../generated-wrappers/i_asset_data';
+export * from '../generated-wrappers/i_asset_proxy';
+export * from '../generated-wrappers/i_authorizable';
+export * from '../generated-wrappers/mixin_authorizable';
+export * from '../generated-wrappers/multi_asset_proxy';
diff --git a/contracts/asset-proxy/src/wrappers/index.ts b/contracts/asset-proxy/src/wrappers/index.ts
deleted file mode 100644
index 6aecbc086..000000000
--- a/contracts/asset-proxy/src/wrappers/index.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-export * from '../../generated-wrappers/i_asset_data';
-export * from '../../generated-wrappers/i_asset_proxy';
-export * from '../../generated-wrappers/erc20_proxy';
-export * from '../../generated-wrappers/erc721_proxy';
-export * from '../../generated-wrappers/mixin_authorizable';
-export * from '../../generated-wrappers/multi_asset_proxy';
-export * from '../../generated-wrappers/i_authorizable';
diff --git a/contracts/asset-proxy/test/proxies.ts b/contracts/asset-proxy/test/proxies.ts
index 797787135..c2f9653aa 100644
--- a/contracts/asset-proxy/test/proxies.ts
+++ b/contracts/asset-proxy/test/proxies.ts
@@ -1,16 +1,4 @@
 import {
-    artifacts as erc20Artifacts,
-    DummyERC20TokenContract,
-    DummyERC20TokenTransferEventArgs,
-    DummyMultipleReturnERC20TokenContract,
-    DummyNoReturnERC20TokenContract,
-} from '@0x/contracts-erc20';
-import {
-    artifacts as erc721Artifacts,
-    DummyERC721ReceiverContract,
-    DummyERC721TokenContract,
-} from '@0x/contracts-erc721';
-import {
     chaiSetup,
     constants,
     expectTransactionFailedAsync,
@@ -30,6 +18,12 @@ import * as _ from 'lodash';
 
 import {
     artifacts,
+    DummyERC20TokenContract,
+    DummyERC20TokenTransferEventArgs,
+    DummyERC721ReceiverContract,
+    DummyERC721TokenContract,
+    DummyMultipleReturnERC20TokenContract,
+    DummyNoReturnERC20TokenContract,
     ERC20ProxyContract,
     ERC20Wrapper,
     ERC721ProxyContract,
@@ -154,7 +148,7 @@ describe('Asset Transfer Proxies', () => {
             constants.DUMMY_TOKEN_DECIMALS,
         );
         noReturnErc20Token = await DummyNoReturnERC20TokenContract.deployFrom0xArtifactAsync(
-            erc20Artifacts.DummyNoReturnERC20Token,
+            artifacts.DummyNoReturnERC20Token,
             provider,
             txDefaults,
             constants.DUMMY_TOKEN_NAME,
@@ -163,7 +157,7 @@ describe('Asset Transfer Proxies', () => {
             constants.DUMMY_TOKEN_TOTAL_SUPPLY,
         );
         multipleReturnErc20Token = await DummyMultipleReturnERC20TokenContract.deployFrom0xArtifactAsync(
-            erc20Artifacts.DummyMultipleReturnERC20Token,
+            artifacts.DummyMultipleReturnERC20Token,
             provider,
             txDefaults,
             constants.DUMMY_TOKEN_NAME,
@@ -204,7 +198,7 @@ describe('Asset Transfer Proxies', () => {
         // Deploy and configure ERC721 tokens and receiver
         [erc721TokenA, erc721TokenB] = await erc721Wrapper.deployDummyTokensAsync();
         erc721Receiver = await DummyERC721ReceiverContract.deployFrom0xArtifactAsync(
-            erc721Artifacts.DummyERC721Receiver,
+            artifacts.DummyERC721Receiver,
             provider,
             txDefaults,
         );
@@ -568,7 +562,7 @@ describe('Asset Transfer Proxies', () => {
                     erc721Receiver.address,
                     amount,
                 );
-                const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...erc721Artifacts });
+                const logDecoder = new LogDecoder(web3Wrapper, artifacts);
                 const tx = await logDecoder.getTxWithDecodedLogsAsync(
                     await web3Wrapper.sendTransactionAsync({
                         to: erc721Proxy.address,
@@ -760,7 +754,7 @@ describe('Asset Transfer Proxies', () => {
                     inputAmount,
                 );
                 const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...erc20Artifacts });
+                const logDecoder = new LogDecoder(web3Wrapper, artifacts);
                 const tx = await logDecoder.getTxWithDecodedLogsAsync(
                     await web3Wrapper.sendTransactionAsync({
                         to: multiAssetProxy.address,
diff --git a/contracts/asset-proxy/test/utils/erc20_wrapper.ts b/contracts/asset-proxy/test/utils/erc20_wrapper.ts
index 12cd06ece..09607e776 100644
--- a/contracts/asset-proxy/test/utils/erc20_wrapper.ts
+++ b/contracts/asset-proxy/test/utils/erc20_wrapper.ts
@@ -1,4 +1,3 @@
-import { artifacts as tokensArtifacts, DummyERC20TokenContract } from '@0x/contracts-erc20';
 import { constants, ERC20BalancesByOwner, txDefaults } from '@0x/contracts-test-utils';
 import { assetDataUtils } from '@0x/order-utils';
 import { BigNumber } from '@0x/utils';
@@ -6,8 +5,7 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import { Provider } from 'ethereum-types';
 import * as _ from 'lodash';
 
-import { ERC20ProxyContract } from '../../generated-wrappers/erc20_proxy';
-import { artifacts } from '../../src/artifacts';
+import { artifacts, DummyERC20TokenContract, ERC20ProxyContract } from '../../src';
 
 export class ERC20Wrapper {
     private readonly _tokenOwnerAddresses: string[];
@@ -38,7 +36,7 @@ export class ERC20Wrapper {
         for (let i = 0; i < numberToDeploy; i++) {
             this._dummyTokenContracts.push(
                 await DummyERC20TokenContract.deployFrom0xArtifactAsync(
-                    tokensArtifacts.DummyERC20Token,
+                    artifacts.DummyERC20Token,
                     this._provider,
                     txDefaults,
                     constants.DUMMY_TOKEN_NAME,
diff --git a/contracts/asset-proxy/test/utils/erc721_wrapper.ts b/contracts/asset-proxy/test/utils/erc721_wrapper.ts
index fc43d8c52..92d1398a7 100644
--- a/contracts/asset-proxy/test/utils/erc721_wrapper.ts
+++ b/contracts/asset-proxy/test/utils/erc721_wrapper.ts
@@ -1,4 +1,3 @@
-import { artifacts as tokensArtifacts, DummyERC721TokenContract } from '@0x/contracts-erc721';
 import { constants, ERC721TokenIdsByOwner, txDefaults } from '@0x/contracts-test-utils';
 import { generatePseudoRandomSalt } from '@0x/order-utils';
 import { BigNumber } from '@0x/utils';
@@ -6,8 +5,7 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import { Provider } from 'ethereum-types';
 import * as _ from 'lodash';
 
-import { ERC721ProxyContract } from '../../generated-wrappers/erc721_proxy';
-import { artifacts } from '../../src/artifacts';
+import { artifacts, DummyERC721TokenContract, ERC721ProxyContract } from '../../src';
 
 export class ERC721Wrapper {
     private readonly _tokenOwnerAddresses: string[];
@@ -30,7 +28,7 @@ export class ERC721Wrapper {
         for (const i of _.times(constants.NUM_DUMMY_ERC721_TO_DEPLOY)) {
             this._dummyTokenContracts.push(
                 await DummyERC721TokenContract.deployFrom0xArtifactAsync(
-                    tokensArtifacts.DummyERC721Token,
+                    artifacts.DummyERC721Token,
                     this._provider,
                     txDefaults,
                     constants.DUMMY_TOKEN_NAME,
diff --git a/contracts/asset-proxy/tsconfig.json b/contracts/asset-proxy/tsconfig.json
index 7baa48cbe..526be2c64 100644
--- a/contracts/asset-proxy/tsconfig.json
+++ b/contracts/asset-proxy/tsconfig.json
@@ -1,19 +1,20 @@
 {
     "extends": "../../tsconfig",
-    "compilerOptions": {
-        "outDir": "lib",
-        "rootDir": ".",
-        "resolveJsonModule": true
-    },
+    "compilerOptions": { "outDir": "lib", "rootDir": ".", "resolveJsonModule": true },
     "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
     "files": [
-        "./generated-artifacts/IAssetData.json",
-        "./generated-artifacts/IAssetProxy.json",
-        "./generated-artifacts/IAuthorizable.json",
-        "./generated-artifacts/ERC20Proxy.json",
-        "./generated-artifacts/ERC721Proxy.json",
-        "./generated-artifacts/MixinAuthorizable.json",
-        "./generated-artifacts/MultiAssetProxy.json"
+        "generated-artifacts/DummyERC20Token.json",
+        "generated-artifacts/DummyERC721Receiver.json",
+        "generated-artifacts/DummyERC721Token.json",
+        "generated-artifacts/DummyMultipleReturnERC20Token.json",
+        "generated-artifacts/DummyNoReturnERC20Token.json",
+        "generated-artifacts/ERC20Proxy.json",
+        "generated-artifacts/ERC721Proxy.json",
+        "generated-artifacts/IAssetData.json",
+        "generated-artifacts/IAssetProxy.json",
+        "generated-artifacts/IAuthorizable.json",
+        "generated-artifacts/MixinAuthorizable.json",
+        "generated-artifacts/MultiAssetProxy.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]
 }
diff --git a/contracts/erc20/CHANGELOG.json b/contracts/erc20/CHANGELOG.json
index 34a0948b7..972de2038 100644
--- a/contracts/erc20/CHANGELOG.json
+++ b/contracts/erc20/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "version": "1.0.3",
+        "changes": [
+            {
+                "note": "Fake publish to enable pinning"
+            }
+        ],
+        "timestamp": 1549504360
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1549373905,
         "version": "1.0.1",
         "changes": [
diff --git a/contracts/erc20/CHANGELOG.md b/contracts/erc20/CHANGELOG.md
index 20569f9b9..658309672 100644
--- a/contracts/erc20/CHANGELOG.md
+++ b/contracts/erc20/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.4 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v1.0.3 - _February 7, 2019_
+
+    * Fake publish to enable pinning
+
+## v1.0.2 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v1.0.1 - _February 5, 2019_
 
     * Dependencies updated
diff --git a/contracts/erc20/compiler.json b/contracts/erc20/compiler.json
index 264f6231a..033917d22 100644
--- a/contracts/erc20/compiler.json
+++ b/contracts/erc20/compiler.json
@@ -3,10 +3,7 @@
     "contractsDir": "./contracts",
     "useDockerisedSolc": true,
     "compilerSettings": {
-        "optimizer": {
-            "enabled": true,
-            "runs": 1000000
-        },
+        "optimizer": { "enabled": true, "runs": 1000000 },
         "outputSelection": {
             "*": {
                 "*": [
@@ -20,16 +17,16 @@
         }
     },
     "contracts": [
-        "DummyERC20Token",
-        "DummyMultipleReturnERC20Token",
-        "DummyNoReturnERC20Token",
-        "ReentrantERC20Token",
-        "ERC20Token",
-        "IERC20Token",
-        "MintableERC20Token",
-        "UnlimitedAllowanceERC20Token",
-        "IEtherToken",
-        "WETH9",
-        "ZRXToken"
+        "src/ERC20Token.sol",
+        "src/MintableERC20Token.sol",
+        "src/UnlimitedAllowanceERC20Token.sol",
+        "src/WETH9.sol",
+        "src/ZRXToken.sol",
+        "src/interfaces/IERC20Token.sol",
+        "src/interfaces/IEtherToken.sol",
+        "test/DummyERC20Token.sol",
+        "test/DummyMultipleReturnERC20Token.sol",
+        "test/DummyNoReturnERC20Token.sol",
+        "test/ReentrantERC20Token.sol"
     ]
 }
diff --git a/contracts/erc20/package.json b/contracts/erc20/package.json
index e60af6bfe..45272f157 100644
--- a/contracts/erc20/package.json
+++ b/contracts/erc20/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc20",
-    "version": "1.0.1",
+    "version": "1.0.4",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,10 +29,12 @@
         "profiler:report:html": "istanbul report html && open coverage/index.html",
         "coverage:report:lcov": "istanbul report lcov",
         "test:circleci": "yarn test",
+        "contracts:gen": "contracts-gen",
         "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol"
     },
     "config": {
-        "abis": "generated-artifacts/@(DummyERC20Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|ReentrantERC20Token|ERC20Token|IERC20Token|MintableERC20Token|UnlimitedAllowanceERC20Token|IEtherToken|WETH9|ZRXToken).json"
+        "abis": "./generated-artifacts/@(DummyERC20Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|ERC20Token|IERC20Token|IEtherToken|MintableERC20Token|ReentrantERC20Token|UnlimitedAllowanceERC20Token|WETH9|ZRXToken).json",
+        "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
         "type": "git",
@@ -44,10 +46,11 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/tokens/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^2.0.0",
-        "@0x/contracts-test-utils": "^3.0.0",
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/sol-compiler": "^3.0.0",
+        "@0x/abi-gen": "^2.0.2",
+        "@0x/contracts-gen": "^1.0.1",
+        "@0x/contracts-test-utils": "^3.0.3",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/sol-compiler": "^3.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -64,15 +67,15 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^4.0.0",
-        "@0x/contracts-exchange-libs": "^1.0.1",
-        "@0x/contracts-utils": "^2.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/base-contract": "^4.0.2",
+        "@0x/contracts-exchange-libs": "1.0.2",
+        "@0x/contracts-utils": "2.0.1",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "ethereum-types": "^2.0.0",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/contracts/erc20/src/artifacts.ts b/contracts/erc20/src/artifacts.ts
new file mode 100644
index 000000000..c97a73195
--- /dev/null
+++ b/contracts/erc20/src/artifacts.ts
@@ -0,0 +1,31 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+import { ContractArtifact } from 'ethereum-types';
+
+import * as DummyERC20Token from '../generated-artifacts/DummyERC20Token.json';
+import * as DummyMultipleReturnERC20Token from '../generated-artifacts/DummyMultipleReturnERC20Token.json';
+import * as DummyNoReturnERC20Token from '../generated-artifacts/DummyNoReturnERC20Token.json';
+import * as ERC20Token from '../generated-artifacts/ERC20Token.json';
+import * as IERC20Token from '../generated-artifacts/IERC20Token.json';
+import * as IEtherToken from '../generated-artifacts/IEtherToken.json';
+import * as MintableERC20Token from '../generated-artifacts/MintableERC20Token.json';
+import * as ReentrantERC20Token from '../generated-artifacts/ReentrantERC20Token.json';
+import * as UnlimitedAllowanceERC20Token from '../generated-artifacts/UnlimitedAllowanceERC20Token.json';
+import * as WETH9 from '../generated-artifacts/WETH9.json';
+import * as ZRXToken from '../generated-artifacts/ZRXToken.json';
+export const artifacts = {
+    ERC20Token: ERC20Token as ContractArtifact,
+    MintableERC20Token: MintableERC20Token as ContractArtifact,
+    UnlimitedAllowanceERC20Token: UnlimitedAllowanceERC20Token as ContractArtifact,
+    WETH9: WETH9 as ContractArtifact,
+    ZRXToken: (ZRXToken as any) as ContractArtifact,
+    IERC20Token: IERC20Token as ContractArtifact,
+    IEtherToken: IEtherToken as ContractArtifact,
+    DummyERC20Token: DummyERC20Token as ContractArtifact,
+    DummyMultipleReturnERC20Token: DummyMultipleReturnERC20Token as ContractArtifact,
+    DummyNoReturnERC20Token: DummyNoReturnERC20Token as ContractArtifact,
+    ReentrantERC20Token: ReentrantERC20Token as ContractArtifact,
+};
diff --git a/contracts/erc20/src/artifacts/index.ts b/contracts/erc20/src/artifacts/index.ts
deleted file mode 100644
index ce1ae06ac..000000000
--- a/contracts/erc20/src/artifacts/index.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-import { ContractArtifact } from 'ethereum-types';
-
-import * as DummyERC20Token from '../../generated-artifacts/DummyERC20Token.json';
-import * as DummyMultipleReturnERC20Token from '../../generated-artifacts/DummyMultipleReturnERC20Token.json';
-import * as DummyNoReturnERC20Token from '../../generated-artifacts/DummyNoReturnERC20Token.json';
-import * as ERC20Token from '../../generated-artifacts/ERC20Token.json';
-import * as IERC20Token from '../../generated-artifacts/IERC20Token.json';
-import * as IEtherToken from '../../generated-artifacts/IEtherToken.json';
-import * as MintableERC20Token from '../../generated-artifacts/MintableERC20Token.json';
-import * as ReentrantERC20Token from '../../generated-artifacts/ReentrantERC20Token.json';
-import * as UnlimitedAllowanceERC20Token from '../../generated-artifacts/UnlimitedAllowanceERC20Token.json';
-import * as WETH9 from '../../generated-artifacts/WETH9.json';
-import * as ZRXToken from '../../generated-artifacts/ZRXToken.json';
-
-// tslint:disable:no-unnecessary-type-assertion
-export const artifacts = {
-    DummyERC20Token: DummyERC20Token as ContractArtifact,
-    DummyMultipleReturnERC20Token: DummyMultipleReturnERC20Token as ContractArtifact,
-    DummyNoReturnERC20Token: DummyNoReturnERC20Token as ContractArtifact,
-    ReentrantERC20Token: ReentrantERC20Token as ContractArtifact,
-    ERC20Token: ERC20Token as ContractArtifact,
-    IERC20Token: IERC20Token as ContractArtifact,
-    MintableERC20Token: MintableERC20Token as ContractArtifact,
-    UnlimitedAllowanceERC20Token: UnlimitedAllowanceERC20Token as ContractArtifact,
-    IEtherToken: IEtherToken as ContractArtifact,
-    WETH9: WETH9 as ContractArtifact,
-    // Note(albrow): "as any" hack still required here because ZRXToken does not
-    // conform to the v2 artifact type.
-    ZRXToken: (ZRXToken as any) as ContractArtifact,
-};
diff --git a/contracts/erc20/src/wrappers.ts b/contracts/erc20/src/wrappers.ts
new file mode 100644
index 000000000..40193e7d8
--- /dev/null
+++ b/contracts/erc20/src/wrappers.ts
@@ -0,0 +1,16 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+export * from '../generated-wrappers/dummy_erc20_token';
+export * from '../generated-wrappers/dummy_multiple_return_erc20_token';
+export * from '../generated-wrappers/dummy_no_return_erc20_token';
+export * from '../generated-wrappers/erc20_token';
+export * from '../generated-wrappers/i_erc20_token';
+export * from '../generated-wrappers/i_ether_token';
+export * from '../generated-wrappers/mintable_erc20_token';
+export * from '../generated-wrappers/reentrant_erc20_token';
+export * from '../generated-wrappers/unlimited_allowance_erc20_token';
+export * from '../generated-wrappers/weth9';
+export * from '../generated-wrappers/zrx_token';
diff --git a/contracts/erc20/src/wrappers/index.ts b/contracts/erc20/src/wrappers/index.ts
deleted file mode 100644
index b4e4ef969..000000000
--- a/contracts/erc20/src/wrappers/index.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-export * from '../../generated-wrappers/zrx_token';
-export * from '../../generated-wrappers/weth9';
-export * from '../../generated-wrappers/unlimited_allowance_erc20_token';
-export * from '../../generated-wrappers/reentrant_erc20_token';
-export * from '../../generated-wrappers/mintable_erc20_token';
-export * from '../../generated-wrappers/i_ether_token';
-export * from '../../generated-wrappers/i_erc20_token';
-export * from '../../generated-wrappers/erc20_token';
-export * from '../../generated-wrappers/dummy_no_return_erc20_token';
-export * from '../../generated-wrappers/dummy_multiple_return_erc20_token';
-export * from '../../generated-wrappers/dummy_erc20_token';
diff --git a/contracts/erc20/tsconfig.json b/contracts/erc20/tsconfig.json
index 4df7424be..74419260a 100644
--- a/contracts/erc20/tsconfig.json
+++ b/contracts/erc20/tsconfig.json
@@ -1,23 +1,19 @@
 {
     "extends": "../../tsconfig",
-    "compilerOptions": {
-        "outDir": "lib",
-        "rootDir": ".",
-        "resolveJsonModule": true
-    },
+    "compilerOptions": { "outDir": "lib", "rootDir": ".", "resolveJsonModule": true },
     "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
     "files": [
-        "./generated-artifacts/DummyERC20Token.json",
-        "./generated-artifacts/DummyMultipleReturnERC20Token.json",
-        "./generated-artifacts/DummyNoReturnERC20Token.json",
-        "./generated-artifacts/ReentrantERC20Token.json",
-        "./generated-artifacts/ERC20Token.json",
-        "./generated-artifacts/IERC20Token.json",
-        "./generated-artifacts/MintableERC20Token.json",
-        "./generated-artifacts/UnlimitedAllowanceERC20Token.json",
-        "./generated-artifacts/IEtherToken.json",
-        "./generated-artifacts/WETH9.json",
-        "./generated-artifacts/ZRXToken.json"
+        "generated-artifacts/DummyERC20Token.json",
+        "generated-artifacts/DummyMultipleReturnERC20Token.json",
+        "generated-artifacts/DummyNoReturnERC20Token.json",
+        "generated-artifacts/ERC20Token.json",
+        "generated-artifacts/IERC20Token.json",
+        "generated-artifacts/IEtherToken.json",
+        "generated-artifacts/MintableERC20Token.json",
+        "generated-artifacts/ReentrantERC20Token.json",
+        "generated-artifacts/UnlimitedAllowanceERC20Token.json",
+        "generated-artifacts/WETH9.json",
+        "generated-artifacts/ZRXToken.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]
 }
diff --git a/contracts/erc721/CHANGELOG.json b/contracts/erc721/CHANGELOG.json
index 83b8bc1cd..5f3e08dd3 100644
--- a/contracts/erc721/CHANGELOG.json
+++ b/contracts/erc721/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "version": "1.0.3",
+        "changes": [
+            {
+                "note": "Fake publish to enable pinning"
+            }
+        ],
+        "timestamp": 1549504360
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1549373905,
         "version": "1.0.1",
         "changes": [
diff --git a/contracts/erc721/CHANGELOG.md b/contracts/erc721/CHANGELOG.md
index 01f5fec60..5886f10b8 100644
--- a/contracts/erc721/CHANGELOG.md
+++ b/contracts/erc721/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.4 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v1.0.3 - _February 7, 2019_
+
+    * Fake publish to enable pinning
+
+## v1.0.2 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v1.0.1 - _February 5, 2019_
 
     * Dependencies updated
diff --git a/contracts/erc721/compiler.json b/contracts/erc721/compiler.json
index db8589016..09d79ba28 100644
--- a/contracts/erc721/compiler.json
+++ b/contracts/erc721/compiler.json
@@ -3,10 +3,7 @@
     "contractsDir": "./contracts",
     "useDockerisedSolc": true,
     "compilerSettings": {
-        "optimizer": {
-            "enabled": true,
-            "runs": 1000000
-        },
+        "optimizer": { "enabled": true, "runs": 1000000 },
         "outputSelection": {
             "*": {
                 "*": [
@@ -20,12 +17,12 @@
         }
     },
     "contracts": [
-        "DummyERC721Receiver",
-        "InvalidERC721Receiver",
-        "DummyERC721Token",
-        "ERC721Token",
-        "IERC721Receiver",
-        "IERC721Token",
-        "MintableERC721Token"
+        "src/ERC721Token.sol",
+        "src/MintableERC721Token.sol",
+        "src/interfaces/IERC721Receiver.sol",
+        "src/interfaces/IERC721Token.sol",
+        "test/DummyERC721Receiver.sol",
+        "test/DummyERC721Token.sol",
+        "test/InvalidERC721Receiver.sol"
     ]
 }
diff --git a/contracts/erc721/package.json b/contracts/erc721/package.json
index 0a31a48ff..830ea5d73 100644
--- a/contracts/erc721/package.json
+++ b/contracts/erc721/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc721",
-    "version": "1.0.1",
+    "version": "1.0.4",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,10 +29,12 @@
         "profiler:report:html": "istanbul report html && open coverage/index.html",
         "coverage:report:lcov": "istanbul report lcov",
         "test:circleci": "yarn test",
+        "contracts:gen": "contracts-gen",
         "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol"
     },
     "config": {
-        "abis": "generated-artifacts/@(DummyERC721Receiver|InvalidERC721Receiver|DummyERC721Token|ERC721Token|IERC721Receiver|IERC721Token|MintableERC721Token).json"
+        "abis": "./generated-artifacts/@(DummyERC721Receiver|DummyERC721Token|ERC721Token|IERC721Receiver|IERC721Token|InvalidERC721Receiver|MintableERC721Token).json",
+        "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
         "type": "git",
@@ -44,10 +46,11 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/tokens/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^2.0.0",
-        "@0x/contracts-test-utils": "^3.0.0",
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/sol-compiler": "^3.0.0",
+        "@0x/abi-gen": "^2.0.2",
+        "@0x/contracts-gen": "^1.0.1",
+        "@0x/contracts-test-utils": "^3.0.3",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/sol-compiler": "^3.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -64,14 +67,14 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^4.0.0",
-        "@0x/contracts-utils": "^2.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/base-contract": "^4.0.2",
+        "@0x/contracts-utils": "2.0.1",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "ethereum-types": "^2.0.0",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/contracts/erc721/src/artifacts.ts b/contracts/erc721/src/artifacts.ts
new file mode 100644
index 000000000..79a76e21b
--- /dev/null
+++ b/contracts/erc721/src/artifacts.ts
@@ -0,0 +1,23 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+import { ContractArtifact } from 'ethereum-types';
+
+import * as DummyERC721Receiver from '../generated-artifacts/DummyERC721Receiver.json';
+import * as DummyERC721Token from '../generated-artifacts/DummyERC721Token.json';
+import * as ERC721Token from '../generated-artifacts/ERC721Token.json';
+import * as IERC721Receiver from '../generated-artifacts/IERC721Receiver.json';
+import * as IERC721Token from '../generated-artifacts/IERC721Token.json';
+import * as InvalidERC721Receiver from '../generated-artifacts/InvalidERC721Receiver.json';
+import * as MintableERC721Token from '../generated-artifacts/MintableERC721Token.json';
+export const artifacts = {
+    ERC721Token: ERC721Token as ContractArtifact,
+    MintableERC721Token: MintableERC721Token as ContractArtifact,
+    IERC721Receiver: IERC721Receiver as ContractArtifact,
+    IERC721Token: IERC721Token as ContractArtifact,
+    DummyERC721Receiver: DummyERC721Receiver as ContractArtifact,
+    DummyERC721Token: DummyERC721Token as ContractArtifact,
+    InvalidERC721Receiver: InvalidERC721Receiver as ContractArtifact,
+};
diff --git a/contracts/erc721/src/artifacts/index.ts b/contracts/erc721/src/artifacts/index.ts
deleted file mode 100644
index 8d5ec8a46..000000000
--- a/contracts/erc721/src/artifacts/index.ts
+++ /dev/null
@@ -1,20 +0,0 @@
-import { ContractArtifact } from 'ethereum-types';
-
-import * as DummyERC721Receiver from '../../generated-artifacts/DummyERC721Receiver.json';
-import * as DummyERC721Token from '../../generated-artifacts/DummyERC721Token.json';
-import * as ERC721Token from '../../generated-artifacts/ERC721Token.json';
-import * as IERC721Receiver from '../../generated-artifacts/IERC721Receiver.json';
-import * as IERC721Token from '../../generated-artifacts/IERC721Token.json';
-import * as InvalidERC721Receiver from '../../generated-artifacts/InvalidERC721Receiver.json';
-import * as MintableERC721Token from '../../generated-artifacts/MintableERC721Token.json';
-
-// tslint:disable:no-unnecessary-type-assertion
-export const artifacts = {
-    DummyERC721Receiver: DummyERC721Receiver as ContractArtifact,
-    InvalidERC721Receiver: InvalidERC721Receiver as ContractArtifact,
-    DummyERC721Token: DummyERC721Token as ContractArtifact,
-    ERC721Token: ERC721Token as ContractArtifact,
-    IERC721Receiver: IERC721Receiver as ContractArtifact,
-    IERC721Token: IERC721Token as ContractArtifact,
-    MintableERC721Token: MintableERC721Token as ContractArtifact,
-};
diff --git a/contracts/erc721/src/wrappers.ts b/contracts/erc721/src/wrappers.ts
new file mode 100644
index 000000000..716f6cca4
--- /dev/null
+++ b/contracts/erc721/src/wrappers.ts
@@ -0,0 +1,12 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+export * from '../generated-wrappers/dummy_erc721_receiver';
+export * from '../generated-wrappers/dummy_erc721_token';
+export * from '../generated-wrappers/erc721_token';
+export * from '../generated-wrappers/i_erc721_receiver';
+export * from '../generated-wrappers/i_erc721_token';
+export * from '../generated-wrappers/invalid_erc721_receiver';
+export * from '../generated-wrappers/mintable_erc721_token';
diff --git a/contracts/erc721/src/wrappers/index.ts b/contracts/erc721/src/wrappers/index.ts
deleted file mode 100644
index ba6c51885..000000000
--- a/contracts/erc721/src/wrappers/index.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-export * from '../../generated-wrappers/mintable_erc721_token';
-export * from '../../generated-wrappers/invalid_erc721_receiver';
-export * from '../../generated-wrappers/i_erc721_token';
-export * from '../../generated-wrappers/i_erc721_receiver';
-export * from '../../generated-wrappers/erc721_token';
-export * from '../../generated-wrappers/dummy_erc721_token';
-export * from '../../generated-wrappers/dummy_erc721_receiver';
diff --git a/contracts/erc721/tsconfig.json b/contracts/erc721/tsconfig.json
index 098c3a7f3..3b218affe 100644
--- a/contracts/erc721/tsconfig.json
+++ b/contracts/erc721/tsconfig.json
@@ -1,19 +1,15 @@
 {
     "extends": "../../tsconfig",
-    "compilerOptions": {
-        "outDir": "lib",
-        "rootDir": ".",
-        "resolveJsonModule": true
-    },
+    "compilerOptions": { "outDir": "lib", "rootDir": ".", "resolveJsonModule": true },
     "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
     "files": [
-        "./generated-artifacts/DummyERC721Receiver.json",
-        "./generated-artifacts/InvalidERC721Receiver.json",
-        "./generated-artifacts/DummyERC721Token.json",
-        "./generated-artifacts/ERC721Token.json",
-        "./generated-artifacts/IERC721Receiver.json",
-        "./generated-artifacts/IERC721Token.json",
-        "./generated-artifacts/MintableERC721Token.json"
+        "generated-artifacts/DummyERC721Receiver.json",
+        "generated-artifacts/DummyERC721Token.json",
+        "generated-artifacts/ERC721Token.json",
+        "generated-artifacts/IERC721Receiver.json",
+        "generated-artifacts/IERC721Token.json",
+        "generated-artifacts/InvalidERC721Receiver.json",
+        "generated-artifacts/MintableERC721Token.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]
 }
diff --git a/contracts/exchange-forwarder/CHANGELOG.json b/contracts/exchange-forwarder/CHANGELOG.json
index ee0c1dce8..338adde3d 100644
--- a/contracts/exchange-forwarder/CHANGELOG.json
+++ b/contracts/exchange-forwarder/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "version": "1.0.3",
+        "changes": [
+            {
+                "note": "Fake publish to enable pinning"
+            }
+        ],
+        "timestamp": 1549504360
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1549373905,
         "version": "1.0.1",
         "changes": [
diff --git a/contracts/exchange-forwarder/CHANGELOG.md b/contracts/exchange-forwarder/CHANGELOG.md
index 7489d67aa..24bb6da5b 100644
--- a/contracts/exchange-forwarder/CHANGELOG.md
+++ b/contracts/exchange-forwarder/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.4 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v1.0.3 - _February 7, 2019_
+
+    * Fake publish to enable pinning
+
+## v1.0.2 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v1.0.1 - _February 5, 2019_
 
     * Dependencies updated
diff --git a/contracts/exchange-forwarder/compiler.json b/contracts/exchange-forwarder/compiler.json
index e93eb4bdd..051e81de5 100644
--- a/contracts/exchange-forwarder/compiler.json
+++ b/contracts/exchange-forwarder/compiler.json
@@ -3,10 +3,7 @@
     "contractsDir": "./contracts",
     "useDockerisedSolc": true,
     "compilerSettings": {
-        "optimizer": {
-            "enabled": true,
-            "runs": 1000000
-        },
+        "optimizer": { "enabled": true, "runs": 1000000 },
         "outputSelection": {
             "*": {
                 "*": [
@@ -19,5 +16,11 @@
             }
         }
     },
-    "contracts": ["Forwarder"]
+    "contracts": [
+        "@0x/contracts-erc20/contracts/src/WETH9.sol",
+        "@0x/contracts-erc20/contracts/test/DummyERC20Token.sol",
+        "@0x/contracts-erc721/contracts/test/DummyERC721Token.sol",
+        "@0x/contracts-exchange/contracts/src/Exchange.sol",
+        "src/Forwarder.sol"
+    ]
 }
diff --git a/contracts/exchange-forwarder/package.json b/contracts/exchange-forwarder/package.json
index 53b7a92d9..875d60ae6 100644
--- a/contracts/exchange-forwarder/package.json
+++ b/contracts/exchange-forwarder/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-exchange-forwarder",
-    "version": "1.0.1",
+    "version": "1.0.4",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,10 +29,12 @@
         "profiler:report:html": "istanbul report html && open coverage/index.html",
         "coverage:report:lcov": "istanbul report lcov",
         "test:circleci": "yarn test",
+        "contracts:gen": "contracts-gen",
         "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol"
     },
     "config": {
-        "abis": "generated-artifacts/@(Forwarder).json"
+        "abis": "./generated-artifacts/@(DummyERC20Token|DummyERC721Token|Exchange|Forwarder|WETH9).json",
+        "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
         "type": "git",
@@ -44,11 +46,12 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/extensions/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^2.0.0",
-        "@0x/contract-wrappers": "^6.0.1",
-        "@0x/contracts-test-utils": "^3.0.0",
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/sol-compiler": "^3.0.0",
+        "@0x/abi-gen": "^2.0.2",
+        "@0x/contract-wrappers": "^7.0.2",
+        "@0x/contracts-gen": "^1.0.1",
+        "@0x/contracts-test-utils": "^3.0.3",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/sol-compiler": "^3.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -65,20 +68,20 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^4.0.0",
-        "@0x/contracts-asset-proxy": "^1.0.1",
-        "@0x/contracts-erc20": "^1.0.1",
-        "@0x/contracts-erc721": "^1.0.1",
-        "@0x/contracts-exchange": "^1.0.1",
-        "@0x/contracts-exchange-libs": "^1.0.1",
-        "@0x/contracts-utils": "^2.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/base-contract": "^4.0.2",
+        "@0x/contracts-asset-proxy": "1.0.2",
+        "@0x/contracts-erc20": "1.0.2",
+        "@0x/contracts-erc721": "1.0.2",
+        "@0x/contracts-exchange": "1.0.2",
+        "@0x/contracts-exchange-libs": "1.0.2",
+        "@0x/contracts-utils": "2.0.1",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "ethereum-types": "^2.0.0",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/contracts/exchange-forwarder/src/artifacts.ts b/contracts/exchange-forwarder/src/artifacts.ts
new file mode 100644
index 000000000..94bcdf84a
--- /dev/null
+++ b/contracts/exchange-forwarder/src/artifacts.ts
@@ -0,0 +1,19 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+import { ContractArtifact } from 'ethereum-types';
+
+import * as DummyERC20Token from '../generated-artifacts/DummyERC20Token.json';
+import * as DummyERC721Token from '../generated-artifacts/DummyERC721Token.json';
+import * as Exchange from '../generated-artifacts/Exchange.json';
+import * as Forwarder from '../generated-artifacts/Forwarder.json';
+import * as WETH9 from '../generated-artifacts/WETH9.json';
+export const artifacts = {
+    WETH9: WETH9 as ContractArtifact,
+    DummyERC20Token: DummyERC20Token as ContractArtifact,
+    DummyERC721Token: DummyERC721Token as ContractArtifact,
+    Exchange: Exchange as ContractArtifact,
+    Forwarder: Forwarder as ContractArtifact,
+};
diff --git a/contracts/exchange-forwarder/src/artifacts/index.ts b/contracts/exchange-forwarder/src/artifacts/index.ts
deleted file mode 100644
index f15dac49a..000000000
--- a/contracts/exchange-forwarder/src/artifacts/index.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import { ContractArtifact } from 'ethereum-types';
-
-import * as Forwarder from '../../generated-artifacts/Forwarder.json';
-
-export const artifacts = {
-    Forwarder: Forwarder as ContractArtifact,
-};
diff --git a/contracts/exchange-forwarder/src/wrappers.ts b/contracts/exchange-forwarder/src/wrappers.ts
new file mode 100644
index 000000000..cbe72c5cf
--- /dev/null
+++ b/contracts/exchange-forwarder/src/wrappers.ts
@@ -0,0 +1,10 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+export * from '../generated-wrappers/dummy_erc20_token';
+export * from '../generated-wrappers/dummy_erc721_token';
+export * from '../generated-wrappers/exchange';
+export * from '../generated-wrappers/forwarder';
+export * from '../generated-wrappers/weth9';
diff --git a/contracts/exchange-forwarder/src/wrappers/index.ts b/contracts/exchange-forwarder/src/wrappers/index.ts
deleted file mode 100644
index 89dff9e74..000000000
--- a/contracts/exchange-forwarder/src/wrappers/index.ts
+++ /dev/null
@@ -1 +0,0 @@
-export * from '../../generated-wrappers/forwarder';
diff --git a/contracts/exchange-forwarder/test/forwarder.ts b/contracts/exchange-forwarder/test/forwarder.ts
index 24c219563..5acf113dd 100644
--- a/contracts/exchange-forwarder/test/forwarder.ts
+++ b/contracts/exchange-forwarder/test/forwarder.ts
@@ -1,7 +1,5 @@
 import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
-import { artifacts as erc20Artifacts, DummyERC20TokenContract, WETH9Contract } from '@0x/contracts-erc20';
-import { DummyERC721TokenContract } from '@0x/contracts-erc721';
-import { artifacts as exchangeArtifacts, ExchangeContract, ExchangeWrapper } from '@0x/contracts-exchange';
+import { ExchangeWrapper } from '@0x/contracts-exchange';
 import {
     chaiSetup,
     constants,
@@ -23,7 +21,15 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as chai from 'chai';
 import { TransactionReceiptWithDecodedLogs } from 'ethereum-types';
 
-import { artifacts, ForwarderContract, ForwarderWrapper } from '../src';
+import {
+    artifacts,
+    DummyERC20TokenContract,
+    DummyERC721TokenContract,
+    ExchangeContract,
+    ForwarderContract,
+    ForwarderWrapper,
+    WETH9Contract,
+} from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -88,14 +94,14 @@ describe(ContractName.Forwarder, () => {
         const erc721Balances = await erc721Wrapper.getBalancesAsync();
         erc721MakerAssetIds = erc721Balances[makerAddress][erc721Token.address];
 
-        wethContract = await WETH9Contract.deployFrom0xArtifactAsync(erc20Artifacts.WETH9, provider, txDefaults);
+        wethContract = await WETH9Contract.deployFrom0xArtifactAsync(artifacts.WETH9, provider, txDefaults);
         weth = new DummyERC20TokenContract(wethContract.abi, wethContract.address, provider);
         erc20Wrapper.addDummyTokenContract(weth);
 
         wethAssetData = assetDataUtils.encodeERC20AssetData(wethContract.address);
         zrxAssetData = assetDataUtils.encodeERC20AssetData(zrxToken.address);
         const exchangeInstance = await ExchangeContract.deployFrom0xArtifactAsync(
-            exchangeArtifacts.Exchange,
+            artifacts.Exchange,
             provider,
             txDefaults,
             zrxAssetData,
@@ -166,7 +172,7 @@ describe(ContractName.Forwarder, () => {
     describe('constructor', () => {
         it('should revert if assetProxy is unregistered', async () => {
             const exchangeInstance = await ExchangeContract.deployFrom0xArtifactAsync(
-                exchangeArtifacts.Exchange,
+                artifacts.Exchange,
                 provider,
                 txDefaults,
                 zrxAssetData,
diff --git a/contracts/exchange-forwarder/test/utils/forwarder_wrapper.ts b/contracts/exchange-forwarder/test/utils/forwarder_wrapper.ts
index 207106852..4f9f6110a 100644
--- a/contracts/exchange-forwarder/test/utils/forwarder_wrapper.ts
+++ b/contracts/exchange-forwarder/test/utils/forwarder_wrapper.ts
@@ -1,6 +1,3 @@
-import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
-import { artifacts as erc721Artifacts } from '@0x/contracts-erc721';
-import { artifacts as exchangeArtifacts } from '@0x/contracts-exchange';
 import { constants, formatters, LogDecoder, MarketSellOrders } from '@0x/contracts-test-utils';
 import { SignedOrder } from '@0x/types';
 import { BigNumber } from '@0x/utils';
@@ -61,12 +58,7 @@ export class ForwarderWrapper {
     constructor(contractInstance: ForwarderContract, provider: Provider) {
         this._forwarderContract = contractInstance;
         this._web3Wrapper = new Web3Wrapper(provider);
-        this._logDecoder = new LogDecoder(this._web3Wrapper, {
-            ...artifacts,
-            ...erc20Artifacts,
-            ...erc721Artifacts,
-            ...exchangeArtifacts,
-        });
+        this._logDecoder = new LogDecoder(this._web3Wrapper, artifacts);
     }
     public async marketSellOrdersWithEthAsync(
         orders: SignedOrder[],
diff --git a/contracts/exchange-forwarder/tsconfig.json b/contracts/exchange-forwarder/tsconfig.json
index cd80b5a5f..92c3a0475 100644
--- a/contracts/exchange-forwarder/tsconfig.json
+++ b/contracts/exchange-forwarder/tsconfig.json
@@ -1,11 +1,13 @@
 {
     "extends": "../../tsconfig",
-    "compilerOptions": {
-        "outDir": "lib",
-        "rootDir": ".",
-        "resolveJsonModule": true
-    },
+    "compilerOptions": { "outDir": "lib", "rootDir": ".", "resolveJsonModule": true },
     "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
-    "files": ["./generated-artifacts/Forwarder.json"],
+    "files": [
+        "generated-artifacts/DummyERC20Token.json",
+        "generated-artifacts/DummyERC721Token.json",
+        "generated-artifacts/Exchange.json",
+        "generated-artifacts/Forwarder.json",
+        "generated-artifacts/WETH9.json"
+    ],
     "exclude": ["./deploy/solc/solc_bin"]
 }
diff --git a/contracts/exchange-libs/CHANGELOG.json b/contracts/exchange-libs/CHANGELOG.json
index 6d769c502..5de06a714 100644
--- a/contracts/exchange-libs/CHANGELOG.json
+++ b/contracts/exchange-libs/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "version": "1.0.3",
+        "changes": [
+            {
+                "note": "Fake publish to enable pinning"
+            }
+        ],
+        "timestamp": 1549504360
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1549373905,
         "version": "1.0.1",
         "changes": [
diff --git a/contracts/exchange-libs/CHANGELOG.md b/contracts/exchange-libs/CHANGELOG.md
index d2740d0b1..46e970e6f 100644
--- a/contracts/exchange-libs/CHANGELOG.md
+++ b/contracts/exchange-libs/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.4 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v1.0.3 - _February 7, 2019_
+
+    * Fake publish to enable pinning
+
+## v1.0.2 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v1.0.1 - _February 5, 2019_
 
     * Dependencies updated
diff --git a/contracts/exchange-libs/compiler.json b/contracts/exchange-libs/compiler.json
index c4f0c6bd9..2a69896e6 100644
--- a/contracts/exchange-libs/compiler.json
+++ b/contracts/exchange-libs/compiler.json
@@ -3,10 +3,7 @@
     "contractsDir": "./contracts",
     "useDockerisedSolc": true,
     "compilerSettings": {
-        "optimizer": {
-            "enabled": true,
-            "runs": 1000000
-        },
+        "optimizer": { "enabled": true, "runs": 1000000 },
         "outputSelection": {
             "*": {
                 "*": [
@@ -20,13 +17,13 @@
         }
     },
     "contracts": [
-        "TestLibs",
-        "LibOrder",
-        "LibMath",
-        "LibFillResults",
-        "LibAbiEncoder",
-        "LibEIP712",
-        "LibAssetProxyErrors",
-        "LibConstants"
+        "src/LibAbiEncoder.sol",
+        "src/LibAssetProxyErrors.sol",
+        "src/LibConstants.sol",
+        "src/LibEIP712.sol",
+        "src/LibFillResults.sol",
+        "src/LibMath.sol",
+        "src/LibOrder.sol",
+        "test/TestLibs.sol"
     ]
 }
diff --git a/contracts/exchange-libs/package.json b/contracts/exchange-libs/package.json
index bd35e9888..8ffd5e81d 100644
--- a/contracts/exchange-libs/package.json
+++ b/contracts/exchange-libs/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-exchange-libs",
-    "version": "1.0.1",
+    "version": "1.0.4",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,10 +29,12 @@
         "profiler:report:html": "istanbul report html && open coverage/index.html",
         "coverage:report:lcov": "istanbul report lcov",
         "test:circleci": "yarn test",
+        "contracts:gen": "contracts-gen",
         "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol"
     },
     "config": {
-        "abis": "generated-artifacts/@(LibMath|LibOrder|LibFillResults|LibAbiEncoder|TestLibs|LibEIP712).json"
+        "abis": "./generated-artifacts/@(LibAbiEncoder|LibAssetProxyErrors|LibConstants|LibEIP712|LibFillResults|LibMath|LibOrder|TestLibs).json",
+        "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
         "type": "git",
@@ -44,10 +46,11 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/libs/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^2.0.0",
-        "@0x/contracts-test-utils": "^3.0.0",
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/sol-compiler": "^3.0.0",
+        "@0x/abi-gen": "^2.0.2",
+        "@0x/contracts-gen": "^1.0.1",
+        "@0x/contracts-test-utils": "^3.0.3",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/sol-compiler": "^3.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -64,15 +67,15 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^4.0.0",
-        "@0x/contracts-utils": "^2.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/base-contract": "^4.0.2",
+        "@0x/contracts-utils": "2.0.1",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "ethereum-types": "^2.0.0",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/contracts/exchange-libs/src/artifacts.ts b/contracts/exchange-libs/src/artifacts.ts
new file mode 100644
index 000000000..861d6f3d2
--- /dev/null
+++ b/contracts/exchange-libs/src/artifacts.ts
@@ -0,0 +1,25 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+import { ContractArtifact } from 'ethereum-types';
+
+import * as LibAbiEncoder from '../generated-artifacts/LibAbiEncoder.json';
+import * as LibAssetProxyErrors from '../generated-artifacts/LibAssetProxyErrors.json';
+import * as LibConstants from '../generated-artifacts/LibConstants.json';
+import * as LibEIP712 from '../generated-artifacts/LibEIP712.json';
+import * as LibFillResults from '../generated-artifacts/LibFillResults.json';
+import * as LibMath from '../generated-artifacts/LibMath.json';
+import * as LibOrder from '../generated-artifacts/LibOrder.json';
+import * as TestLibs from '../generated-artifacts/TestLibs.json';
+export const artifacts = {
+    LibAbiEncoder: LibAbiEncoder as ContractArtifact,
+    LibAssetProxyErrors: LibAssetProxyErrors as ContractArtifact,
+    LibConstants: LibConstants as ContractArtifact,
+    LibEIP712: LibEIP712 as ContractArtifact,
+    LibFillResults: LibFillResults as ContractArtifact,
+    LibMath: LibMath as ContractArtifact,
+    LibOrder: LibOrder as ContractArtifact,
+    TestLibs: TestLibs as ContractArtifact,
+};
diff --git a/contracts/exchange-libs/src/artifacts/index.ts b/contracts/exchange-libs/src/artifacts/index.ts
deleted file mode 100644
index 3955bbe2b..000000000
--- a/contracts/exchange-libs/src/artifacts/index.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import { ContractArtifact } from 'ethereum-types';
-
-import * as LibAbiEncoder from '../../generated-artifacts/LibAbiEncoder.json';
-import * as LibEIP721 from '../../generated-artifacts/LibEIP712.json';
-import * as LibFillResults from '../../generated-artifacts/LibFillResults.json';
-import * as LibMath from '../../generated-artifacts/LibMath.json';
-import * as LibOrder from '../../generated-artifacts/LibOrder.json';
-import * as TestLibs from '../../generated-artifacts/TestLibs.json';
-
-export const artifacts = {
-    TestLibs: TestLibs as ContractArtifact,
-    LibAbiEncoder: LibAbiEncoder as ContractArtifact,
-    LibFillResults: LibFillResults as ContractArtifact,
-    LibMath: LibMath as ContractArtifact,
-    LibOrder: LibOrder as ContractArtifact,
-    LibEIP721: LibEIP721 as ContractArtifact,
-};
diff --git a/contracts/exchange-libs/src/wrappers.ts b/contracts/exchange-libs/src/wrappers.ts
new file mode 100644
index 000000000..05244d87b
--- /dev/null
+++ b/contracts/exchange-libs/src/wrappers.ts
@@ -0,0 +1,13 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+export * from '../generated-wrappers/lib_abi_encoder';
+export * from '../generated-wrappers/lib_asset_proxy_errors';
+export * from '../generated-wrappers/lib_constants';
+export * from '../generated-wrappers/lib_e_i_p712';
+export * from '../generated-wrappers/lib_fill_results';
+export * from '../generated-wrappers/lib_math';
+export * from '../generated-wrappers/lib_order';
+export * from '../generated-wrappers/test_libs';
diff --git a/contracts/exchange-libs/src/wrappers/index.ts b/contracts/exchange-libs/src/wrappers/index.ts
deleted file mode 100644
index baaae6e34..000000000
--- a/contracts/exchange-libs/src/wrappers/index.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-export * from '../../generated-wrappers/test_libs';
-export * from '../../generated-wrappers/lib_abi_encoder';
-export * from '../../generated-wrappers/lib_fill_results';
-export * from '../../generated-wrappers/lib_math';
-export * from '../../generated-wrappers/lib_order';
-export * from '../../generated-wrappers/lib_e_i_p712';
diff --git a/contracts/exchange-libs/tsconfig.json b/contracts/exchange-libs/tsconfig.json
index 27ca35085..1b5d54175 100644
--- a/contracts/exchange-libs/tsconfig.json
+++ b/contracts/exchange-libs/tsconfig.json
@@ -1,18 +1,16 @@
 {
     "extends": "../../tsconfig",
-    "compilerOptions": {
-        "outDir": "lib",
-        "rootDir": ".",
-        "resolveJsonModule": true
-    },
+    "compilerOptions": { "outDir": "lib", "rootDir": ".", "resolveJsonModule": true },
     "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
     "files": [
-        "./generated-artifacts/TestLibs.json",
-        "./generated-artifacts/LibOrder.json",
-        "./generated-artifacts/LibFillResults.json",
-        "./generated-artifacts/LibAbiEncoder.json",
-        "./generated-artifacts/LibEIP712.json",
-        "./generated-artifacts/LibMath.json"
+        "generated-artifacts/LibAbiEncoder.json",
+        "generated-artifacts/LibAssetProxyErrors.json",
+        "generated-artifacts/LibConstants.json",
+        "generated-artifacts/LibEIP712.json",
+        "generated-artifacts/LibFillResults.json",
+        "generated-artifacts/LibMath.json",
+        "generated-artifacts/LibOrder.json",
+        "generated-artifacts/TestLibs.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]
 }
diff --git a/contracts/exchange/CHANGELOG.json b/contracts/exchange/CHANGELOG.json
index a03a08c29..02c614b1a 100644
--- a/contracts/exchange/CHANGELOG.json
+++ b/contracts/exchange/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "version": "1.0.3",
+        "changes": [
+            {
+                "note": "Fake publish to enable pinning"
+            }
+        ],
+        "timestamp": 1549504360
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1549373905,
         "version": "1.0.1",
         "changes": [
diff --git a/contracts/exchange/CHANGELOG.md b/contracts/exchange/CHANGELOG.md
index f59bbf5d4..f265cd96f 100644
--- a/contracts/exchange/CHANGELOG.md
+++ b/contracts/exchange/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.4 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v1.0.3 - _February 7, 2019_
+
+    * Fake publish to enable pinning
+
+## v1.0.2 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v1.0.1 - _February 5, 2019_
 
     * Dependencies updated
diff --git a/contracts/exchange/compiler.json b/contracts/exchange/compiler.json
index 6a5f666d1..b7a94cd13 100644
--- a/contracts/exchange/compiler.json
+++ b/contracts/exchange/compiler.json
@@ -3,10 +3,7 @@
     "contractsDir": "./contracts",
     "useDockerisedSolc": true,
     "compilerSettings": {
-        "optimizer": {
-            "enabled": true,
-            "runs": 1000000
-        },
+        "optimizer": { "enabled": true, "runs": 1000000 },
         "outputSelection": {
             "*": {
                 "*": [
@@ -20,23 +17,31 @@
         }
     },
     "contracts": [
-        "Exchange",
-        "IAssetProxyDispatcher",
-        "IExchange",
-        "IExchangeCore",
-        "IMatchOrders",
-        "ISignatureValidator",
-        "ITransactions",
-        "IValidator",
-        "IWallet",
-        "IWrapperFunctions",
-        "TestAssetProxyDispatcher",
-        "TestExchangeInternals",
-        "TestSignatureValidator",
-        "TestStaticCallReceiver",
-        "ExchangeWrapper",
-        "Validator",
-        "Wallet",
-        "Whitelist"
+        "@0x/contracts-asset-proxy/contracts/src/ERC20Proxy.sol",
+        "@0x/contracts-asset-proxy/contracts/src/ERC721Proxy.sol",
+        "@0x/contracts-asset-proxy/contracts/src/MultiAssetProxy.sol",
+        "@0x/contracts-erc20/contracts/test/DummyERC20Token.sol",
+        "@0x/contracts-erc20/contracts/test/DummyNoReturnERC20Token.sol",
+        "@0x/contracts-erc20/contracts/test/ReentrantERC20Token.sol",
+        "@0x/contracts-erc721/contracts/test/DummyERC721Token.sol",
+        "@0x/contracts-exchange-libs/contracts/test/TestLibs.sol",
+        "examples/ExchangeWrapper.sol",
+        "examples/Validator.sol",
+        "examples/Wallet.sol",
+        "examples/Whitelist.sol",
+        "src/Exchange.sol",
+        "src/interfaces/IAssetProxyDispatcher.sol",
+        "src/interfaces/IExchange.sol",
+        "src/interfaces/IExchangeCore.sol",
+        "src/interfaces/IMatchOrders.sol",
+        "src/interfaces/ISignatureValidator.sol",
+        "src/interfaces/ITransactions.sol",
+        "src/interfaces/IValidator.sol",
+        "src/interfaces/IWallet.sol",
+        "src/interfaces/IWrapperFunctions.sol",
+        "test/TestAssetProxyDispatcher.sol",
+        "test/TestExchangeInternals.sol",
+        "test/TestSignatureValidator.sol",
+        "test/TestStaticCallReceiver.sol"
     ]
 }
diff --git a/contracts/exchange/package.json b/contracts/exchange/package.json
index 76fe7f215..b16785087 100644
--- a/contracts/exchange/package.json
+++ b/contracts/exchange/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-exchange",
-    "version": "1.0.1",
+    "version": "1.0.4",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,10 +29,12 @@
         "profiler:report:html": "istanbul report html && open coverage/index.html",
         "coverage:report:lcov": "istanbul report lcov",
         "test:circleci": "yarn test",
+        "contracts:gen": "contracts-gen",
         "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol"
     },
     "config": {
-        "abis": "generated-artifacts/@(ERC20Proxy|ERC721Proxy|Exchange|IAssetProxyDispatcher|IExchange|IExchangeCore|IMatchOrders|ISignatureValidator|ITransactions|IWrapperFunctions|IValidator|IWallet|MixinAuthorizable|MultiAssetProxy|TestSignatureValidator|TestAssetProxyDispatcher|TestExchangeInternals|TestStaticCallReceiver|ExchangeWrapper|Validator|Wallet|Whitelist).json"
+        "abis": "./generated-artifacts/@(DummyERC20Token|DummyERC721Token|DummyNoReturnERC20Token|ERC20Proxy|ERC721Proxy|Exchange|ExchangeWrapper|IAssetProxyDispatcher|IExchange|IExchangeCore|IMatchOrders|ISignatureValidator|ITransactions|IValidator|IWallet|IWrapperFunctions|MultiAssetProxy|ReentrantERC20Token|TestAssetProxyDispatcher|TestExchangeInternals|TestLibs|TestSignatureValidator|TestStaticCallReceiver|Validator|Wallet|Whitelist).json",
+        "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
         "type": "git",
@@ -44,9 +46,11 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/protocol/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^2.0.0",
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/sol-compiler": "^3.0.0",
+        "@0x/abi-gen": "^2.0.2",
+        "@0x/contracts-gen": "^1.0.1",
+        "@0x/contracts-test-utils": "^3.0.3",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/sol-compiler": "^3.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -63,21 +67,20 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^4.0.0",
-        "@0x/contracts-asset-proxy": "^1.0.1",
-        "@0x/contracts-erc20": "^1.0.1",
-        "@0x/contracts-erc721": "^1.0.1",
-        "@0x/contracts-exchange-libs": "^1.0.1",
-        "@0x/contracts-test-utils": "^3.0.0",
-        "@0x/contracts-utils": "^2.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/base-contract": "^4.0.2",
+        "@0x/contracts-asset-proxy": "1.0.2",
+        "@0x/contracts-erc20": "1.0.2",
+        "@0x/contracts-erc721": "1.0.2",
+        "@0x/contracts-exchange-libs": "1.0.2",
+        "@0x/contracts-utils": "2.0.1",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "ethereum-types": "^2.0.0",
         "ethereumjs-util": "^5.1.1",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/contracts/exchange/src/artifacts.ts b/contracts/exchange/src/artifacts.ts
new file mode 100644
index 000000000..efdacd376
--- /dev/null
+++ b/contracts/exchange/src/artifacts.ts
@@ -0,0 +1,61 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+import { ContractArtifact } from 'ethereum-types';
+
+import * as DummyERC20Token from '../generated-artifacts/DummyERC20Token.json';
+import * as DummyERC721Token from '../generated-artifacts/DummyERC721Token.json';
+import * as DummyNoReturnERC20Token from '../generated-artifacts/DummyNoReturnERC20Token.json';
+import * as ERC20Proxy from '../generated-artifacts/ERC20Proxy.json';
+import * as ERC721Proxy from '../generated-artifacts/ERC721Proxy.json';
+import * as Exchange from '../generated-artifacts/Exchange.json';
+import * as ExchangeWrapper from '../generated-artifacts/ExchangeWrapper.json';
+import * as IAssetProxyDispatcher from '../generated-artifacts/IAssetProxyDispatcher.json';
+import * as IExchange from '../generated-artifacts/IExchange.json';
+import * as IExchangeCore from '../generated-artifacts/IExchangeCore.json';
+import * as IMatchOrders from '../generated-artifacts/IMatchOrders.json';
+import * as ISignatureValidator from '../generated-artifacts/ISignatureValidator.json';
+import * as ITransactions from '../generated-artifacts/ITransactions.json';
+import * as IValidator from '../generated-artifacts/IValidator.json';
+import * as IWallet from '../generated-artifacts/IWallet.json';
+import * as IWrapperFunctions from '../generated-artifacts/IWrapperFunctions.json';
+import * as MultiAssetProxy from '../generated-artifacts/MultiAssetProxy.json';
+import * as ReentrantERC20Token from '../generated-artifacts/ReentrantERC20Token.json';
+import * as TestAssetProxyDispatcher from '../generated-artifacts/TestAssetProxyDispatcher.json';
+import * as TestExchangeInternals from '../generated-artifacts/TestExchangeInternals.json';
+import * as TestLibs from '../generated-artifacts/TestLibs.json';
+import * as TestSignatureValidator from '../generated-artifacts/TestSignatureValidator.json';
+import * as TestStaticCallReceiver from '../generated-artifacts/TestStaticCallReceiver.json';
+import * as Validator from '../generated-artifacts/Validator.json';
+import * as Wallet from '../generated-artifacts/Wallet.json';
+import * as Whitelist from '../generated-artifacts/Whitelist.json';
+export const artifacts = {
+    ERC20Proxy: ERC20Proxy as ContractArtifact,
+    ERC721Proxy: ERC721Proxy as ContractArtifact,
+    MultiAssetProxy: MultiAssetProxy as ContractArtifact,
+    DummyERC20Token: DummyERC20Token as ContractArtifact,
+    DummyNoReturnERC20Token: DummyNoReturnERC20Token as ContractArtifact,
+    ReentrantERC20Token: ReentrantERC20Token as ContractArtifact,
+    DummyERC721Token: DummyERC721Token as ContractArtifact,
+    TestLibs: TestLibs as ContractArtifact,
+    ExchangeWrapper: ExchangeWrapper as ContractArtifact,
+    Validator: Validator as ContractArtifact,
+    Wallet: Wallet as ContractArtifact,
+    Whitelist: Whitelist as ContractArtifact,
+    Exchange: Exchange as ContractArtifact,
+    IAssetProxyDispatcher: IAssetProxyDispatcher as ContractArtifact,
+    IExchange: IExchange as ContractArtifact,
+    IExchangeCore: IExchangeCore as ContractArtifact,
+    IMatchOrders: IMatchOrders as ContractArtifact,
+    ISignatureValidator: ISignatureValidator as ContractArtifact,
+    ITransactions: ITransactions as ContractArtifact,
+    IValidator: IValidator as ContractArtifact,
+    IWallet: IWallet as ContractArtifact,
+    IWrapperFunctions: IWrapperFunctions as ContractArtifact,
+    TestAssetProxyDispatcher: TestAssetProxyDispatcher as ContractArtifact,
+    TestExchangeInternals: TestExchangeInternals as ContractArtifact,
+    TestSignatureValidator: TestSignatureValidator as ContractArtifact,
+    TestStaticCallReceiver: TestStaticCallReceiver as ContractArtifact,
+};
diff --git a/contracts/exchange/src/artifacts/index.ts b/contracts/exchange/src/artifacts/index.ts
deleted file mode 100644
index 798ff17ab..000000000
--- a/contracts/exchange/src/artifacts/index.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-import { ContractArtifact } from 'ethereum-types';
-
-import * as Exchange from '../../generated-artifacts/Exchange.json';
-import * as ExchangeWrapper from '../../generated-artifacts/ExchangeWrapper.json';
-import * as IAssetProxyDispatcher from '../../generated-artifacts/IAssetProxyDispatcher.json';
-import * as IExchange from '../../generated-artifacts/IExchange.json';
-import * as IExchangeCore from '../../generated-artifacts/IExchangeCore.json';
-import * as IMatchOrders from '../../generated-artifacts/IMatchOrders.json';
-import * as ISignatureValidator from '../../generated-artifacts/ISignatureValidator.json';
-import * as ITransactions from '../../generated-artifacts/ITransactions.json';
-import * as IValidator from '../../generated-artifacts/IValidator.json';
-import * as IWallet from '../../generated-artifacts/IWallet.json';
-import * as IWrapperFunctions from '../../generated-artifacts/IWrapperFunctions.json';
-import * as TestAssetProxyDispatcher from '../../generated-artifacts/TestAssetProxyDispatcher.json';
-import * as TestExchangeInternals from '../../generated-artifacts/TestExchangeInternals.json';
-import * as TestSignatureValidator from '../../generated-artifacts/TestSignatureValidator.json';
-import * as TestStaticCallReceiver from '../../generated-artifacts/TestStaticCallReceiver.json';
-import * as Validator from '../../generated-artifacts/Validator.json';
-import * as Wallet from '../../generated-artifacts/Wallet.json';
-import * as Whitelist from '../../generated-artifacts/Whitelist.json';
-
-export const artifacts = {
-    Exchange: Exchange as ContractArtifact,
-    TestAssetProxyDispatcher: TestAssetProxyDispatcher as ContractArtifact,
-    TestExchangeInternals: TestExchangeInternals as ContractArtifact,
-    TestSignatureValidator: TestSignatureValidator as ContractArtifact,
-    TestStaticCallReceiver: TestStaticCallReceiver as ContractArtifact,
-    IExchange: IExchange as ContractArtifact,
-    IExchangeCore: IExchangeCore as ContractArtifact,
-    IMatchOrders: IMatchOrders as ContractArtifact,
-    ISignatureValidator: ISignatureValidator as ContractArtifact,
-    ITransactions: ITransactions as ContractArtifact,
-    IWrapperFunctions: IWrapperFunctions as ContractArtifact,
-    IAssetProxyDispatcher: IAssetProxyDispatcher as ContractArtifact,
-    IValidator: IValidator as ContractArtifact,
-    IWallet: IWallet as ContractArtifact,
-    ExchangeWrapper: ExchangeWrapper as ContractArtifact,
-    Validator: Validator as ContractArtifact,
-    Wallet: Wallet as ContractArtifact,
-    Whitelist: Whitelist as ContractArtifact,
-};
diff --git a/contracts/exchange/src/wrappers.ts b/contracts/exchange/src/wrappers.ts
new file mode 100644
index 000000000..1c1d7fdb4
--- /dev/null
+++ b/contracts/exchange/src/wrappers.ts
@@ -0,0 +1,31 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+export * from '../generated-wrappers/dummy_erc20_token';
+export * from '../generated-wrappers/dummy_erc721_token';
+export * from '../generated-wrappers/dummy_no_return_erc20_token';
+export * from '../generated-wrappers/erc20_proxy';
+export * from '../generated-wrappers/erc721_proxy';
+export * from '../generated-wrappers/exchange';
+export * from '../generated-wrappers/exchange_wrapper';
+export * from '../generated-wrappers/i_asset_proxy_dispatcher';
+export * from '../generated-wrappers/i_exchange';
+export * from '../generated-wrappers/i_exchange_core';
+export * from '../generated-wrappers/i_match_orders';
+export * from '../generated-wrappers/i_signature_validator';
+export * from '../generated-wrappers/i_transactions';
+export * from '../generated-wrappers/i_validator';
+export * from '../generated-wrappers/i_wallet';
+export * from '../generated-wrappers/i_wrapper_functions';
+export * from '../generated-wrappers/multi_asset_proxy';
+export * from '../generated-wrappers/reentrant_erc20_token';
+export * from '../generated-wrappers/test_asset_proxy_dispatcher';
+export * from '../generated-wrappers/test_exchange_internals';
+export * from '../generated-wrappers/test_libs';
+export * from '../generated-wrappers/test_signature_validator';
+export * from '../generated-wrappers/test_static_call_receiver';
+export * from '../generated-wrappers/validator';
+export * from '../generated-wrappers/wallet';
+export * from '../generated-wrappers/whitelist';
diff --git a/contracts/exchange/src/wrappers/index.ts b/contracts/exchange/src/wrappers/index.ts
deleted file mode 100644
index 86e939b56..000000000
--- a/contracts/exchange/src/wrappers/index.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-export * from '../../generated-wrappers/exchange';
-export * from '../../generated-wrappers/test_asset_proxy_dispatcher';
-export * from '../../generated-wrappers/test_exchange_internals';
-export * from '../../generated-wrappers/test_signature_validator';
-export * from '../../generated-wrappers/test_static_call_receiver';
-export * from '../../generated-wrappers/i_asset_proxy_dispatcher';
-export * from '../../generated-wrappers/i_exchange';
-export * from '../../generated-wrappers/i_exchange_core';
-export * from '../../generated-wrappers/i_match_orders';
-export * from '../../generated-wrappers/i_signature_validator';
-export * from '../../generated-wrappers/i_transactions';
-export * from '../../generated-wrappers/i_wrapper_functions';
-export * from '../../generated-wrappers/i_validator';
-export * from '../../generated-wrappers/i_wallet';
-export * from '../../generated-wrappers/exchange_wrapper';
-export * from '../../generated-wrappers/validator';
-export * from '../../generated-wrappers/wallet';
-export * from '../../generated-wrappers/whitelist';
diff --git a/contracts/exchange/test/core.ts b/contracts/exchange/test/core.ts
index 74161cc73..7e61ef7ac 100644
--- a/contracts/exchange/test/core.ts
+++ b/contracts/exchange/test/core.ts
@@ -1,19 +1,4 @@
-import {
-    artifacts as proxyArtifacts,
-    ERC20ProxyContract,
-    ERC20Wrapper,
-    ERC721ProxyContract,
-    ERC721Wrapper,
-    MultiAssetProxyContract,
-} from '@0x/contracts-asset-proxy';
-import {
-    artifacts as erc20Artifacts,
-    DummyERC20TokenContract,
-    DummyERC20TokenTransferEventArgs,
-    DummyNoReturnERC20TokenContract,
-    ReentrantERC20TokenContract,
-} from '@0x/contracts-erc20';
-import { DummyERC721TokenContract } from '@0x/contracts-erc721';
+import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
 import {
     chaiSetup,
     constants,
@@ -39,9 +24,17 @@ import * as _ from 'lodash';
 
 import {
     artifacts,
+    DummyERC20TokenContract,
+    DummyERC20TokenTransferEventArgs,
+    DummyERC721TokenContract,
+    DummyNoReturnERC20TokenContract,
+    ERC20ProxyContract,
+    ERC721ProxyContract,
     ExchangeCancelEventArgs,
     ExchangeContract,
     ExchangeWrapper,
+    MultiAssetProxyContract,
+    ReentrantERC20TokenContract,
     TestStaticCallReceiverContract,
 } from '../src';
 
@@ -98,7 +91,7 @@ describe('Exchange core', () => {
         erc20Proxy = await erc20Wrapper.deployProxyAsync();
         erc721Proxy = await erc721Wrapper.deployProxyAsync();
         multiAssetProxy = await MultiAssetProxyContract.deployFrom0xArtifactAsync(
-            proxyArtifacts.MultiAssetProxy,
+            artifacts.MultiAssetProxy,
             provider,
             txDefaults,
         );
@@ -120,7 +113,7 @@ describe('Exchange core', () => {
             txDefaults,
         );
         reentrantErc20Token = await ReentrantERC20TokenContract.deployFrom0xArtifactAsync(
-            erc20Artifacts.ReentrantERC20Token,
+            artifacts.ReentrantERC20Token,
             provider,
             txDefaults,
             exchange.address,
@@ -345,7 +338,7 @@ describe('Exchange core', () => {
     describe('Testing exchange of ERC20 tokens with no return values', () => {
         before(async () => {
             noReturnErc20Token = await DummyNoReturnERC20TokenContract.deployFrom0xArtifactAsync(
-                erc20Artifacts.DummyNoReturnERC20Token,
+                artifacts.DummyNoReturnERC20Token,
                 provider,
                 txDefaults,
                 constants.DUMMY_TOKEN_NAME,
diff --git a/contracts/exchange/test/dispatcher.ts b/contracts/exchange/test/dispatcher.ts
index a25755936..8263b0402 100644
--- a/contracts/exchange/test/dispatcher.ts
+++ b/contracts/exchange/test/dispatcher.ts
@@ -1,11 +1,4 @@
-import {
-    artifacts as proxyArtifacts,
-    ERC20ProxyContract,
-    ERC20Wrapper,
-    ERC721ProxyContract,
-    ERC721Wrapper,
-} from '@0x/contracts-asset-proxy';
-import { DummyERC20TokenContract } from '@0x/contracts-erc20';
+import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
 import {
     chaiSetup,
     constants,
@@ -25,6 +18,9 @@ import * as _ from 'lodash';
 
 import {
     artifacts,
+    DummyERC20TokenContract,
+    ERC20ProxyContract,
+    ERC721ProxyContract,
     TestAssetProxyDispatcherAssetProxyRegisteredEventArgs,
     TestAssetProxyDispatcherContract,
 } from '../src';
@@ -131,7 +127,7 @@ describe('AssetProxyDispatcher', () => {
             expect(proxyAddress).to.be.equal(erc20Proxy.address);
             // Deploy a new version of the ERC20 Transfer Proxy contract
             const newErc20TransferProxy = await ERC20ProxyContract.deployFrom0xArtifactAsync(
-                proxyArtifacts.ERC20Proxy,
+                artifacts.ERC20Proxy,
                 provider,
                 txDefaults,
             );
diff --git a/contracts/exchange/test/match_orders.ts b/contracts/exchange/test/match_orders.ts
index d17025ddd..98fea67ea 100644
--- a/contracts/exchange/test/match_orders.ts
+++ b/contracts/exchange/test/match_orders.ts
@@ -1,6 +1,4 @@
-import { ERC20ProxyContract, ERC20Wrapper, ERC721ProxyContract, ERC721Wrapper } from '@0x/contracts-asset-proxy';
-import { artifacts as erc20Artifacts, DummyERC20TokenContract, ReentrantERC20TokenContract } from '@0x/contracts-erc20';
-import { DummyERC721TokenContract } from '@0x/contracts-erc721';
+import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
 import {
     chaiSetup,
     constants,
@@ -20,7 +18,18 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as chai from 'chai';
 import * as _ from 'lodash';
 
-import { artifacts, ExchangeContract, ExchangeWrapper, MatchOrderTester, TestExchangeInternalsContract } from '../src';
+import {
+    artifacts,
+    DummyERC20TokenContract,
+    DummyERC721TokenContract,
+    ERC20ProxyContract,
+    ERC721ProxyContract,
+    ExchangeContract,
+    ExchangeWrapper,
+    MatchOrderTester,
+    ReentrantERC20TokenContract,
+    TestExchangeInternalsContract,
+} from '../src';
 
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
 chaiSetup.configure();
@@ -131,7 +140,7 @@ describe('matchOrders', () => {
         );
 
         reentrantErc20Token = await ReentrantERC20TokenContract.deployFrom0xArtifactAsync(
-            erc20Artifacts.ReentrantERC20Token,
+            artifacts.ReentrantERC20Token,
             provider,
             txDefaults,
             exchange.address,
diff --git a/contracts/exchange/test/signature_validator.ts b/contracts/exchange/test/signature_validator.ts
index 89eac4ddb..33510e50c 100644
--- a/contracts/exchange/test/signature_validator.ts
+++ b/contracts/exchange/test/signature_validator.ts
@@ -1,4 +1,3 @@
-import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
 import {
     addressUtils,
     chaiSetup,
@@ -78,7 +77,7 @@ describe('MixinSignatureValidator', () => {
             provider,
             txDefaults,
         );
-        signatureValidatorLogDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...erc20Artifacts });
+        signatureValidatorLogDecoder = new LogDecoder(web3Wrapper, artifacts);
         await web3Wrapper.awaitTransactionSuccessAsync(
             await signatureValidator.setSignatureValidatorApproval.sendTransactionAsync(testValidator.address, true, {
                 from: signerAddress,
diff --git a/contracts/exchange/test/transactions.ts b/contracts/exchange/test/transactions.ts
index 613953493..4f8c07579 100644
--- a/contracts/exchange/test/transactions.ts
+++ b/contracts/exchange/test/transactions.ts
@@ -8,14 +8,13 @@ import {
     OrderFactory,
     orderUtils,
     provider,
-    SignedTransaction,
     TransactionFactory,
     txDefaults,
     web3Wrapper,
 } from '@0x/contracts-test-utils';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils, generatePseudoRandomSalt } from '@0x/order-utils';
-import { OrderWithoutExchangeAddress, RevertReason, SignedOrder } from '@0x/types';
+import { OrderWithoutExchangeAddress, RevertReason, SignedOrder, SignedZeroExTransaction } from '@0x/types';
 import { BigNumber } from '@0x/utils';
 import * as chai from 'chai';
 import * as _ from 'lodash';
@@ -41,7 +40,7 @@ describe('Exchange transactions', () => {
 
     let erc20Balances: ERC20BalancesByOwner;
     let signedOrder: SignedOrder;
-    let signedTx: SignedTransaction;
+    let signedTx: SignedZeroExTransaction;
     let orderWithoutExchangeAddress: OrderWithoutExchangeAddress;
     let orderFactory: OrderFactory;
     let makerTransactionFactory: TransactionFactory;
diff --git a/contracts/exchange/test/utils/exchange_wrapper.ts b/contracts/exchange/test/utils/exchange_wrapper.ts
index eca535c65..535e3bcf2 100644
--- a/contracts/exchange/test/utils/exchange_wrapper.ts
+++ b/contracts/exchange/test/utils/exchange_wrapper.ts
@@ -1,14 +1,5 @@
-import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
-import { artifacts as erc721Artifacts } from '@0x/contracts-erc721';
-import {
-    FillResults,
-    formatters,
-    LogDecoder,
-    OrderInfo,
-    orderUtils,
-    SignedTransaction,
-} from '@0x/contracts-test-utils';
-import { SignedOrder } from '@0x/types';
+import { FillResults, formatters, LogDecoder, OrderInfo, orderUtils } from '@0x/contracts-test-utils';
+import { SignedOrder, SignedZeroExTransaction } from '@0x/types';
 import { AbiEncoder, BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import { MethodAbi, Provider, TransactionReceiptWithDecodedLogs } from 'ethereum-types';
@@ -25,7 +16,7 @@ export class ExchangeWrapper {
     constructor(exchangeContract: ExchangeContract, provider: Provider) {
         this._exchange = exchangeContract;
         this._web3Wrapper = new Web3Wrapper(provider);
-        this._logDecoder = new LogDecoder(this._web3Wrapper, { ...artifacts, ...erc20Artifacts, ...erc721Artifacts });
+        this._logDecoder = new LogDecoder(this._web3Wrapper, artifacts);
     }
     public async fillOrderAsync(
         signedOrder: SignedOrder,
@@ -206,7 +197,7 @@ export class ExchangeWrapper {
         return tx;
     }
     public async executeTransactionAsync(
-        signedTx: SignedTransaction,
+        signedTx: SignedZeroExTransaction,
         from: string,
     ): Promise<TransactionReceiptWithDecodedLogs> {
         const txHash = await this._exchange.executeTransaction.sendTransactionAsync(
diff --git a/contracts/exchange/test/utils/fill_order_combinatorial_utils.ts b/contracts/exchange/test/utils/fill_order_combinatorial_utils.ts
index 26b168909..00ca8a9fc 100644
--- a/contracts/exchange/test/utils/fill_order_combinatorial_utils.ts
+++ b/contracts/exchange/test/utils/fill_order_combinatorial_utils.ts
@@ -1,5 +1,4 @@
 import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
-import { artifacts as libsArtifacts, TestLibsContract } from '@0x/contracts-exchange-libs';
 import {
     AllowanceAmountScenario,
     AssetDataScenario,
@@ -33,7 +32,7 @@ import { LogWithDecodedArgs, Provider, TxData } from 'ethereum-types';
 import * as _ from 'lodash';
 import 'make-promises-safe';
 
-import { artifacts, ExchangeContract, ExchangeFillEventArgs } from '../../src';
+import { artifacts, ExchangeContract, ExchangeFillEventArgs, TestLibsContract } from '../../src';
 
 import { AssetWrapper } from './asset_wrapper';
 import { ExchangeWrapper } from './exchange_wrapper';
@@ -129,11 +128,7 @@ export async function fillOrderCombinatorialUtilsFactoryAsync(
         exchangeContract.address,
     );
 
-    const testLibsContract = await TestLibsContract.deployFrom0xArtifactAsync(
-        libsArtifacts.TestLibs,
-        provider,
-        txDefaults,
-    );
+    const testLibsContract = await TestLibsContract.deployFrom0xArtifactAsync(artifacts.TestLibs, provider, txDefaults);
 
     const fillOrderCombinatorialUtils = new FillOrderCombinatorialUtils(
         orderFactory,
diff --git a/contracts/exchange/test/wrapper.ts b/contracts/exchange/test/wrapper.ts
index 62a0d426f..5476ac99d 100644
--- a/contracts/exchange/test/wrapper.ts
+++ b/contracts/exchange/test/wrapper.ts
@@ -1,6 +1,4 @@
-import { ERC20ProxyContract, ERC20Wrapper, ERC721ProxyContract, ERC721Wrapper } from '@0x/contracts-asset-proxy';
-import { artifacts as erc20Artifacts, DummyERC20TokenContract, ReentrantERC20TokenContract } from '@0x/contracts-erc20';
-import { DummyERC721TokenContract } from '@0x/contracts-erc721';
+import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
 import {
     chaiSetup,
     constants,
@@ -22,7 +20,16 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as chai from 'chai';
 import * as _ from 'lodash';
 
-import { artifacts, ExchangeContract, ExchangeWrapper } from '../src';
+import {
+    artifacts,
+    DummyERC20TokenContract,
+    DummyERC721TokenContract,
+    ERC20ProxyContract,
+    ERC721ProxyContract,
+    ExchangeContract,
+    ExchangeWrapper,
+    ReentrantERC20TokenContract,
+} from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -107,7 +114,7 @@ describe('Exchange wrappers', () => {
         );
 
         reentrantErc20Token = await ReentrantERC20TokenContract.deployFrom0xArtifactAsync(
-            erc20Artifacts.ReentrantERC20Token,
+            artifacts.ReentrantERC20Token,
             provider,
             txDefaults,
             exchange.address,
diff --git a/contracts/exchange/tsconfig.json b/contracts/exchange/tsconfig.json
index b0fcd1771..35ca3d933 100644
--- a/contracts/exchange/tsconfig.json
+++ b/contracts/exchange/tsconfig.json
@@ -1,30 +1,34 @@
 {
     "extends": "../../tsconfig",
-    "compilerOptions": {
-        "outDir": "lib",
-        "rootDir": ".",
-        "resolveJsonModule": true
-    },
+    "compilerOptions": { "outDir": "lib", "rootDir": ".", "resolveJsonModule": true },
     "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
     "files": [
-        "./generated-artifacts/IAssetProxyDispatcher.json",
-        "./generated-artifacts/IExchange.json",
-        "./generated-artifacts/IExchangeCore.json",
-        "./generated-artifacts/IMatchOrders.json",
-        "./generated-artifacts/ISignatureValidator.json",
-        "./generated-artifacts/ITransactions.json",
-        "./generated-artifacts/IValidator.json",
-        "./generated-artifacts/IWallet.json",
-        "./generated-artifacts/IWrapperFunctions.json",
-        "./generated-artifacts/Exchange.json",
-        "./generated-artifacts/TestAssetProxyDispatcher.json",
-        "./generated-artifacts/TestExchangeInternals.json",
-        "./generated-artifacts/TestSignatureValidator.json",
-        "./generated-artifacts/TestStaticCallReceiver.json",
-        "./generated-artifacts/ExchangeWrapper.json",
-        "./generated-artifacts/Validator.json",
-        "./generated-artifacts/Wallet.json",
-        "./generated-artifacts/Whitelist.json"
+        "generated-artifacts/DummyERC20Token.json",
+        "generated-artifacts/DummyERC721Token.json",
+        "generated-artifacts/DummyNoReturnERC20Token.json",
+        "generated-artifacts/ERC20Proxy.json",
+        "generated-artifacts/ERC721Proxy.json",
+        "generated-artifacts/Exchange.json",
+        "generated-artifacts/ExchangeWrapper.json",
+        "generated-artifacts/IAssetProxyDispatcher.json",
+        "generated-artifacts/IExchange.json",
+        "generated-artifacts/IExchangeCore.json",
+        "generated-artifacts/IMatchOrders.json",
+        "generated-artifacts/ISignatureValidator.json",
+        "generated-artifacts/ITransactions.json",
+        "generated-artifacts/IValidator.json",
+        "generated-artifacts/IWallet.json",
+        "generated-artifacts/IWrapperFunctions.json",
+        "generated-artifacts/MultiAssetProxy.json",
+        "generated-artifacts/ReentrantERC20Token.json",
+        "generated-artifacts/TestAssetProxyDispatcher.json",
+        "generated-artifacts/TestExchangeInternals.json",
+        "generated-artifacts/TestLibs.json",
+        "generated-artifacts/TestSignatureValidator.json",
+        "generated-artifacts/TestStaticCallReceiver.json",
+        "generated-artifacts/Validator.json",
+        "generated-artifacts/Wallet.json",
+        "generated-artifacts/Whitelist.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]
 }
diff --git a/contracts/extensions/CHANGELOG.json b/contracts/extensions/CHANGELOG.json
index 6e89b0c79..8a1335c51 100644
--- a/contracts/extensions/CHANGELOG.json
+++ b/contracts/extensions/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "2.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Fake publish to enable pinning"
+            }
+        ],
+        "timestamp": 1549504360
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/contracts/extensions/CHANGELOG.md b/contracts/extensions/CHANGELOG.md
index 54014c14b..34137efdb 100644
--- a/contracts/extensions/CHANGELOG.md
+++ b/contracts/extensions/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.2 - _February 7, 2019_
+
+    * Fake publish to enable pinning
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/contracts/extensions/compiler.json b/contracts/extensions/compiler.json
index 91e0bd429..41fd582ad 100644
--- a/contracts/extensions/compiler.json
+++ b/contracts/extensions/compiler.json
@@ -3,10 +3,7 @@
     "contractsDir": "./contracts",
     "useDockerisedSolc": true,
     "compilerSettings": {
-        "optimizer": {
-            "enabled": true,
-            "runs": 1000000
-        },
+        "optimizer": { "enabled": true, "runs": 1000000 },
         "outputSelection": {
             "*": {
                 "*": [
@@ -19,5 +16,17 @@
             }
         }
     },
-    "contracts": ["BalanceThresholdFilter", "DutchAuction", "OrderMatcher", "OrderValidator"]
+    "contracts": [
+        "@0x/contracts-asset-proxy/contracts/src/ERC20Proxy.sol",
+        "@0x/contracts-asset-proxy/contracts/src/ERC721Proxy.sol",
+        "@0x/contracts-erc20/contracts/src/WETH9.sol",
+        "@0x/contracts-erc20/contracts/test/DummyERC20Token.sol",
+        "@0x/contracts-erc721/contracts/test/DummyERC721Token.sol",
+        "@0x/contracts-exchange/contracts/examples/ExchangeWrapper.sol",
+        "@0x/contracts-exchange/contracts/src/Exchange.sol",
+        "src/BalanceThresholdFilter/BalanceThresholdFilter.sol",
+        "src/DutchAuction/DutchAuction.sol",
+        "src/OrderMatcher/OrderMatcher.sol",
+        "src/OrderValidator/OrderValidator.sol"
+    ]
 }
diff --git a/contracts/extensions/package.json b/contracts/extensions/package.json
index 2c8767bcb..831a3398a 100644
--- a/contracts/extensions/package.json
+++ b/contracts/extensions/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-extensions",
-    "version": "2.0.0",
+    "version": "2.0.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,10 +29,12 @@
         "profiler:report:html": "istanbul report html && open coverage/index.html",
         "coverage:report:lcov": "istanbul report lcov",
         "test:circleci": "yarn test",
+        "contracts:gen": "contracts-gen",
         "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol"
     },
     "config": {
-        "abis": "generated-artifacts/@(BalanceThresholdFilter|DutchAuction|OrderMatcher|OrderValidator).json"
+        "abis": "./generated-artifacts/@(BalanceThresholdFilter|DummyERC20Token|DummyERC721Token|DutchAuction|ERC20Proxy|ERC721Proxy|Exchange|ExchangeWrapper|OrderMatcher|OrderValidator|WETH9).json",
+        "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
         "type": "git",
@@ -44,11 +46,12 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/extensions/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^2.0.0",
-        "@0x/contract-wrappers": "^6.0.1",
-        "@0x/contracts-test-utils": "^3.0.0",
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/sol-compiler": "^3.0.0",
+        "@0x/abi-gen": "^2.0.2",
+        "@0x/contract-wrappers": "^7.0.2",
+        "@0x/contracts-gen": "^1.0.1",
+        "@0x/contracts-test-utils": "^3.0.3",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/sol-compiler": "^3.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -65,20 +68,20 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^4.0.0",
-        "@0x/contracts-asset-proxy": "^1.0.1",
-        "@0x/contracts-erc20": "^1.0.1",
-        "@0x/contracts-erc721": "^1.0.1",
-        "@0x/contracts-exchange": "^1.0.1",
-        "@0x/contracts-exchange-libs": "^1.0.1",
-        "@0x/contracts-utils": "^2.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/base-contract": "^4.0.2",
+        "@0x/contracts-asset-proxy": "1.0.2",
+        "@0x/contracts-erc20": "1.0.2",
+        "@0x/contracts-erc721": "1.0.2",
+        "@0x/contracts-exchange": "1.0.2",
+        "@0x/contracts-exchange-libs": "1.0.2",
+        "@0x/contracts-utils": "2.0.1",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "ethereum-types": "^2.0.0",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/contracts/extensions/src/artifacts.ts b/contracts/extensions/src/artifacts.ts
new file mode 100644
index 000000000..efa5c859c
--- /dev/null
+++ b/contracts/extensions/src/artifacts.ts
@@ -0,0 +1,31 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+import { ContractArtifact } from 'ethereum-types';
+
+import * as BalanceThresholdFilter from '../generated-artifacts/BalanceThresholdFilter.json';
+import * as DummyERC20Token from '../generated-artifacts/DummyERC20Token.json';
+import * as DummyERC721Token from '../generated-artifacts/DummyERC721Token.json';
+import * as DutchAuction from '../generated-artifacts/DutchAuction.json';
+import * as ERC20Proxy from '../generated-artifacts/ERC20Proxy.json';
+import * as ERC721Proxy from '../generated-artifacts/ERC721Proxy.json';
+import * as Exchange from '../generated-artifacts/Exchange.json';
+import * as ExchangeWrapper from '../generated-artifacts/ExchangeWrapper.json';
+import * as OrderMatcher from '../generated-artifacts/OrderMatcher.json';
+import * as OrderValidator from '../generated-artifacts/OrderValidator.json';
+import * as WETH9 from '../generated-artifacts/WETH9.json';
+export const artifacts = {
+    ERC20Proxy: ERC20Proxy as ContractArtifact,
+    ERC721Proxy: ERC721Proxy as ContractArtifact,
+    WETH9: WETH9 as ContractArtifact,
+    DummyERC20Token: DummyERC20Token as ContractArtifact,
+    DummyERC721Token: DummyERC721Token as ContractArtifact,
+    ExchangeWrapper: ExchangeWrapper as ContractArtifact,
+    Exchange: Exchange as ContractArtifact,
+    BalanceThresholdFilter: BalanceThresholdFilter as ContractArtifact,
+    DutchAuction: DutchAuction as ContractArtifact,
+    OrderMatcher: OrderMatcher as ContractArtifact,
+    OrderValidator: OrderValidator as ContractArtifact,
+};
diff --git a/contracts/extensions/src/artifacts/index.ts b/contracts/extensions/src/artifacts/index.ts
deleted file mode 100644
index f2aee4908..000000000
--- a/contracts/extensions/src/artifacts/index.ts
+++ /dev/null
@@ -1,13 +0,0 @@
-import { ContractArtifact } from 'ethereum-types';
-
-import * as BalanceThresholdFilter from '../../generated-artifacts/BalanceThresholdFilter.json';
-import * as DutchAuction from '../../generated-artifacts/DutchAuction.json';
-import * as OrderMatcher from '../../generated-artifacts/OrderMatcher.json';
-import * as OrderValidator from '../../generated-artifacts/OrderValidator.json';
-
-export const artifacts = {
-    BalanceThresholdFilter: BalanceThresholdFilter as ContractArtifact,
-    DutchAuction: DutchAuction as ContractArtifact,
-    OrderMatcher: OrderMatcher as ContractArtifact,
-    OrderValidator: OrderValidator as ContractArtifact,
-};
diff --git a/contracts/extensions/src/wrappers.ts b/contracts/extensions/src/wrappers.ts
new file mode 100644
index 000000000..1a67d2ee3
--- /dev/null
+++ b/contracts/extensions/src/wrappers.ts
@@ -0,0 +1,16 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+export * from '../generated-wrappers/balance_threshold_filter';
+export * from '../generated-wrappers/dummy_erc20_token';
+export * from '../generated-wrappers/dummy_erc721_token';
+export * from '../generated-wrappers/dutch_auction';
+export * from '../generated-wrappers/erc20_proxy';
+export * from '../generated-wrappers/erc721_proxy';
+export * from '../generated-wrappers/exchange';
+export * from '../generated-wrappers/exchange_wrapper';
+export * from '../generated-wrappers/order_matcher';
+export * from '../generated-wrappers/order_validator';
+export * from '../generated-wrappers/weth9';
diff --git a/contracts/extensions/src/wrappers/index.ts b/contracts/extensions/src/wrappers/index.ts
deleted file mode 100644
index eed198524..000000000
--- a/contracts/extensions/src/wrappers/index.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-export * from '../../generated-wrappers/balance_threshold_filter';
-export * from '../../generated-wrappers/dutch_auction';
-export * from '../../generated-wrappers/order_matcher';
-export * from '../../generated-wrappers/order_validator';
diff --git a/contracts/extensions/test/balance_threshold_filter.ts b/contracts/extensions/test/balance_threshold_filter.ts
index c79a72f5a..34eb319de 100644
--- a/contracts/extensions/test/balance_threshold_filter.ts
+++ b/contracts/extensions/test/balance_threshold_filter.ts
@@ -1,3 +1,4 @@
+import { ExchangeWrapper } from '@0x/contracts-exchange';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils } from '@0x/order-utils';
 import { Order, RevertReason, SignedOrder } from '@0x/types';
@@ -9,7 +10,6 @@ import * as _ from 'lodash';
 
 import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
 import { DummyERC20TokenContract } from '@0x/contracts-erc20';
-import { artifacts as exchangeArtifacts, ExchangeContract, ExchangeWrapper } from '@0x/contracts-exchange';
 import {
     chaiSetup,
     constants,
@@ -24,7 +24,7 @@ import {
     web3Wrapper,
 } from '@0x/contracts-test-utils';
 
-import { artifacts, BalanceThresholdFilterContract, BalanceThresholdWrapper } from '../src';
+import { artifacts, BalanceThresholdFilterContract, BalanceThresholdWrapper, ExchangeContract } from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -127,7 +127,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
         await erc20Wrapper.setBalancesAndAllowancesAsync();
         // Deploy Exchange contract
         exchangeInstance = await ExchangeContract.deployFrom0xArtifactAsync(
-            exchangeArtifacts.Exchange,
+            artifacts.Exchange,
             provider,
             txDefaults,
             zrxAssetData,
diff --git a/contracts/extensions/test/dutch_auction.ts b/contracts/extensions/test/dutch_auction.ts
index 34ff25c3d..efe813ffc 100644
--- a/contracts/extensions/test/dutch_auction.ts
+++ b/contracts/extensions/test/dutch_auction.ts
@@ -1,8 +1,6 @@
 import { DutchAuctionWrapper } from '@0x/contract-wrappers';
 import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
-import { artifacts as erc20Artifacts, DummyERC20TokenContract, WETH9Contract } from '@0x/contracts-erc20';
-import { DummyERC721TokenContract } from '@0x/contracts-erc721';
-import { artifacts as exchangeArtifacts, ExchangeContract, ExchangeWrapper } from '@0x/contracts-exchange';
+import { ExchangeWrapper } from '@0x/contracts-exchange';
 import {
     chaiSetup,
     constants,
@@ -23,7 +21,15 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as chai from 'chai';
 import * as _ from 'lodash';
 
-import { artifacts, DutchAuctionContract, DutchAuctionTestWrapper } from '../src';
+import {
+    artifacts,
+    DummyERC20TokenContract,
+    DummyERC721TokenContract,
+    DutchAuctionContract,
+    DutchAuctionTestWrapper,
+    ExchangeContract,
+    WETH9Contract,
+} from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -82,12 +88,12 @@ describe(ContractName.DutchAuction, () => {
         const erc721Balances = await erc721Wrapper.getBalancesAsync();
         erc721MakerAssetIds = erc721Balances[makerAddress][erc721Token.address];
 
-        wethContract = await WETH9Contract.deployFrom0xArtifactAsync(erc20Artifacts.WETH9, provider, txDefaults);
+        wethContract = await WETH9Contract.deployFrom0xArtifactAsync(artifacts.WETH9, provider, txDefaults);
         erc20Wrapper.addDummyTokenContract(wethContract as any);
 
         const zrxAssetData = assetDataUtils.encodeERC20AssetData(zrxToken.address);
         const exchangeInstance = await ExchangeContract.deployFrom0xArtifactAsync(
-            exchangeArtifacts.Exchange,
+            artifacts.Exchange,
             provider,
             txDefaults,
             zrxAssetData,
diff --git a/contracts/extensions/test/order_matcher.ts b/contracts/extensions/test/order_matcher.ts
index 0b2f9ddbb..d726de8e0 100644
--- a/contracts/extensions/test/order_matcher.ts
+++ b/contracts/extensions/test/order_matcher.ts
@@ -1,17 +1,5 @@
-import {
-    artifacts as proxyArtifacts,
-    ERC20ProxyContract,
-    ERC20Wrapper,
-    ERC721ProxyContract,
-} from '@0x/contracts-asset-proxy';
-import { artifacts as erc20Artifacts, DummyERC20TokenContract } from '@0x/contracts-erc20';
-import { artifacts as erc721Artifacts, DummyERC721TokenContract } from '@0x/contracts-erc721';
-import {
-    artifacts as exchangeArtifacts,
-    ExchangeContract,
-    ExchangeFillEventArgs,
-    ExchangeWrapper,
-} from '@0x/contracts-exchange';
+import { ERC20Wrapper } from '@0x/contracts-asset-proxy';
+import { ExchangeWrapper } from '@0x/contracts-exchange';
 import {
     chaiSetup,
     constants,
@@ -34,7 +22,16 @@ import * as chai from 'chai';
 import { LogWithDecodedArgs } from 'ethereum-types';
 import * as _ from 'lodash';
 
-import { artifacts, OrderMatcherContract } from '../src';
+import {
+    artifacts,
+    DummyERC20TokenContract,
+    DummyERC721TokenContract,
+    ERC20ProxyContract,
+    ERC721ProxyContract,
+    ExchangeContract,
+    ExchangeFillEventArgs,
+    OrderMatcherContract,
+} from '../src';
 
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
 chaiSetup.configure();
@@ -104,14 +101,10 @@ describe('OrderMatcher', () => {
         erc20Proxy = await erc20Wrapper.deployProxyAsync();
         await erc20Wrapper.setBalancesAndAllowancesAsync();
         // Deploy ERC721 proxy
-        erc721Proxy = await ERC721ProxyContract.deployFrom0xArtifactAsync(
-            proxyArtifacts.ERC721Proxy,
-            provider,
-            txDefaults,
-        );
+        erc721Proxy = await ERC721ProxyContract.deployFrom0xArtifactAsync(artifacts.ERC721Proxy, provider, txDefaults);
         // Depoy exchange
         exchange = await ExchangeContract.deployFrom0xArtifactAsync(
-            exchangeArtifacts.Exchange,
+            artifacts.Exchange,
             provider,
             txDefaults,
             assetDataUtils.encodeERC20AssetData(zrxToken.address),
@@ -200,7 +193,7 @@ describe('OrderMatcher', () => {
     describe('constructor', () => {
         it('should revert if assetProxy is unregistered', async () => {
             const exchangeInstance = await ExchangeContract.deployFrom0xArtifactAsync(
-                exchangeArtifacts.Exchange,
+                artifacts.Exchange,
                 provider,
                 txDefaults,
                 constants.NULL_BYTES,
@@ -454,7 +447,7 @@ describe('OrderMatcher', () => {
                 signedOrderLeft.signature,
                 signedOrderRight.signature,
             );
-            const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...erc20Artifacts, ...exchangeArtifacts });
+            const logDecoder = new LogDecoder(web3Wrapper, artifacts);
             const txReceipt = await logDecoder.getTxWithDecodedLogsAsync(
                 await web3Wrapper.sendTransactionAsync({
                     data,
@@ -492,7 +485,7 @@ describe('OrderMatcher', () => {
                 signedOrderLeft.signature,
                 signedOrderRight.signature,
             );
-            const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...erc20Artifacts, ...exchangeArtifacts });
+            const logDecoder = new LogDecoder(web3Wrapper, artifacts);
             const txReceipt = await logDecoder.getTxWithDecodedLogsAsync(
                 await web3Wrapper.sendTransactionAsync({
                     data,
@@ -729,7 +722,7 @@ describe('OrderMatcher', () => {
         });
         it('should allow owner to withdraw ERC721 tokens', async () => {
             const erc721Token = await DummyERC721TokenContract.deployFrom0xArtifactAsync(
-                erc721Artifacts.DummyERC721Token,
+                artifacts.DummyERC721Token,
                 provider,
                 txDefaults,
                 constants.DUMMY_TOKEN_NAME,
@@ -774,7 +767,7 @@ describe('OrderMatcher', () => {
         });
         it('should be able to approve an ERC721 token by passing in allowance = 1', async () => {
             const erc721Token = await DummyERC721TokenContract.deployFrom0xArtifactAsync(
-                erc721Artifacts.DummyERC721Token,
+                artifacts.DummyERC721Token,
                 provider,
                 txDefaults,
                 constants.DUMMY_TOKEN_NAME,
@@ -791,7 +784,7 @@ describe('OrderMatcher', () => {
         });
         it('should be able to approve an ERC721 token by passing in allowance > 1', async () => {
             const erc721Token = await DummyERC721TokenContract.deployFrom0xArtifactAsync(
-                erc721Artifacts.DummyERC721Token,
+                artifacts.DummyERC721Token,
                 provider,
                 txDefaults,
                 constants.DUMMY_TOKEN_NAME,
diff --git a/contracts/extensions/test/order_validator.ts b/contracts/extensions/test/order_validator.ts
index 88dae14fb..ec31cafbc 100644
--- a/contracts/extensions/test/order_validator.ts
+++ b/contracts/extensions/test/order_validator.ts
@@ -1,7 +1,5 @@
-import { ERC20ProxyContract, ERC20Wrapper, ERC721ProxyContract, ERC721Wrapper } from '@0x/contracts-asset-proxy';
-import { DummyERC20TokenContract } from '@0x/contracts-erc20';
-import { DummyERC721TokenContract } from '@0x/contracts-erc721';
-import { artifacts as exchangeArtifacts, ExchangeContract, ExchangeWrapper } from '@0x/contracts-exchange';
+import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
+import { ExchangeWrapper } from '@0x/contracts-exchange';
 import {
     chaiSetup,
     constants,
@@ -18,7 +16,15 @@ import { BigNumber } from '@0x/utils';
 import * as chai from 'chai';
 import * as _ from 'lodash';
 
-import { artifacts, OrderValidatorContract } from '../src';
+import {
+    artifacts,
+    DummyERC20TokenContract,
+    DummyERC721TokenContract,
+    ERC20ProxyContract,
+    ERC721ProxyContract,
+    ExchangeContract,
+    OrderValidatorContract,
+} from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -74,7 +80,7 @@ describe('OrderValidator', () => {
 
         const zrxAssetData = assetDataUtils.encodeERC20AssetData(zrxToken.address);
         exchange = await ExchangeContract.deployFrom0xArtifactAsync(
-            exchangeArtifacts.Exchange,
+            artifacts.Exchange,
             provider,
             txDefaults,
             zrxAssetData,
diff --git a/contracts/extensions/test/utils/balance_threshold_wrapper.ts b/contracts/extensions/test/utils/balance_threshold_wrapper.ts
index 3178d992e..ab59c5688 100644
--- a/contracts/extensions/test/utils/balance_threshold_wrapper.ts
+++ b/contracts/extensions/test/utils/balance_threshold_wrapper.ts
@@ -1,6 +1,3 @@
-import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
-import { artifacts as erc721Artifacts } from '@0x/contracts-erc721';
-import { artifacts as exchangeArtifacts, ExchangeContract } from '@0x/contracts-exchange';
 import {
     FillResults,
     formatters,
@@ -15,8 +12,7 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import { Provider, TransactionReceiptWithDecodedLogs } from 'ethereum-types';
 import * as _ from 'lodash';
 
-import { BalanceThresholdFilterContract } from '../../generated-wrappers/balance_threshold_filter';
-import { artifacts } from '../../src/artifacts';
+import { artifacts, BalanceThresholdFilterContract, ExchangeContract } from '../../src';
 
 export class BalanceThresholdWrapper {
     private readonly _balanceThresholdFilter: BalanceThresholdFilterContract;
@@ -34,12 +30,7 @@ export class BalanceThresholdWrapper {
         this._exchange = exchangeContract;
         this._signerTransactionFactory = signerTransactionFactory;
         this._web3Wrapper = new Web3Wrapper(provider);
-        this._logDecoder = new LogDecoder(this._web3Wrapper, {
-            ...artifacts,
-            ...erc20Artifacts,
-            ...erc721Artifacts,
-            ...exchangeArtifacts,
-        });
+        this._logDecoder = new LogDecoder(this._web3Wrapper, artifacts);
     }
     public async fillOrderAsync(
         signedOrder: SignedOrder,
@@ -227,7 +218,7 @@ export class BalanceThresholdWrapper {
         from: string,
     ): Promise<TransactionReceiptWithDecodedLogs> {
         const params = orderUtils.createMatchOrders(signedOrderLeft, signedOrderRight);
-        const data = await this._exchange.matchOrders.getABIEncodedTransactionData(
+        const data = this._exchange.matchOrders.getABIEncodedTransactionData(
             params.left,
             params.right,
             params.leftSignature,
diff --git a/contracts/extensions/test/utils/dutch_auction_test_wrapper.ts b/contracts/extensions/test/utils/dutch_auction_test_wrapper.ts
index 5899ffcac..06cdc21d5 100644
--- a/contracts/extensions/test/utils/dutch_auction_test_wrapper.ts
+++ b/contracts/extensions/test/utils/dutch_auction_test_wrapper.ts
@@ -1,6 +1,3 @@
-import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
-import { artifacts as erc721Artifacts } from '@0x/contracts-erc721';
-import { artifacts as exchangeArtifacts } from '@0x/contracts-exchange';
 import { LogDecoder } from '@0x/contracts-test-utils';
 import { DutchAuctionDetails, SignedOrder } from '@0x/types';
 import { Web3Wrapper } from '@0x/web3-wrapper';
@@ -18,12 +15,7 @@ export class DutchAuctionTestWrapper {
     constructor(contractInstance: DutchAuctionContract, provider: Provider) {
         this._dutchAuctionContract = contractInstance;
         this._web3Wrapper = new Web3Wrapper(provider);
-        this._logDecoder = new LogDecoder(this._web3Wrapper, {
-            ...artifacts,
-            ...erc20Artifacts,
-            ...erc721Artifacts,
-            ...exchangeArtifacts,
-        });
+        this._logDecoder = new LogDecoder(this._web3Wrapper, artifacts);
     }
     /**
      * Matches the buy and sell orders at an amount given the following: the current block time, the auction
diff --git a/contracts/extensions/tsconfig.json b/contracts/extensions/tsconfig.json
index 0c06c6902..b424bfa04 100644
--- a/contracts/extensions/tsconfig.json
+++ b/contracts/extensions/tsconfig.json
@@ -1,16 +1,19 @@
 {
     "extends": "../../tsconfig",
-    "compilerOptions": {
-        "outDir": "lib",
-        "rootDir": ".",
-        "resolveJsonModule": true
-    },
+    "compilerOptions": { "outDir": "lib", "rootDir": ".", "resolveJsonModule": true },
     "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
     "files": [
-        "./generated-artifacts/BalanceThresholdFilter.json",
-        "./generated-artifacts/DutchAuction.json",
-        "./generated-artifacts/OrderMatcher.json",
-        "./generated-artifacts/OrderValidator.json"
+        "generated-artifacts/BalanceThresholdFilter.json",
+        "generated-artifacts/DummyERC20Token.json",
+        "generated-artifacts/DummyERC721Token.json",
+        "generated-artifacts/DutchAuction.json",
+        "generated-artifacts/ERC20Proxy.json",
+        "generated-artifacts/ERC721Proxy.json",
+        "generated-artifacts/Exchange.json",
+        "generated-artifacts/ExchangeWrapper.json",
+        "generated-artifacts/OrderMatcher.json",
+        "generated-artifacts/OrderValidator.json",
+        "generated-artifacts/WETH9.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]
 }
diff --git a/contracts/multisig/CHANGELOG.json b/contracts/multisig/CHANGELOG.json
index 71a02a0cd..0c1b52f2f 100644
--- a/contracts/multisig/CHANGELOG.json
+++ b/contracts/multisig/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "2.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Fake publish to enable pinning"
+            }
+        ],
+        "timestamp": 1549504360
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/contracts/multisig/CHANGELOG.md b/contracts/multisig/CHANGELOG.md
index 6dc72b9ef..7c7b0ae4a 100644
--- a/contracts/multisig/CHANGELOG.md
+++ b/contracts/multisig/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.2 - _February 7, 2019_
+
+    * Fake publish to enable pinning
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/contracts/multisig/compiler.json b/contracts/multisig/compiler.json
index ae3905238..336a9ed7b 100644
--- a/contracts/multisig/compiler.json
+++ b/contracts/multisig/compiler.json
@@ -3,10 +3,7 @@
     "contractsDir": "./contracts",
     "useDockerisedSolc": true,
     "compilerSettings": {
-        "optimizer": {
-            "enabled": true,
-            "runs": 1000000
-        },
+        "optimizer": { "enabled": true, "runs": 1000000 },
         "outputSelection": {
             "*": {
                 "*": [
@@ -20,10 +17,11 @@
         }
     },
     "contracts": [
-        "AssetProxyOwner",
-        "MultiSigWallet",
-        "MultiSigWalletWithTimeLock",
-        "TestAssetProxyOwner",
-        "TestRejectEther"
+        "@0x/contracts-asset-proxy/contracts/src/MixinAuthorizable.sol",
+        "src/AssetProxyOwner.sol",
+        "src/MultiSigWallet.sol",
+        "src/MultiSigWalletWithTimeLock.sol",
+        "test/TestAssetProxyOwner.sol",
+        "test/TestRejectEther.sol"
     ]
 }
diff --git a/contracts/multisig/package.json b/contracts/multisig/package.json
index 2bd71e240..f3774c409 100644
--- a/contracts/multisig/package.json
+++ b/contracts/multisig/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-multisig",
-    "version": "2.0.0",
+    "version": "2.0.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,10 +29,12 @@
         "profiler:report:html": "istanbul report html && open coverage/index.html",
         "coverage:report:lcov": "istanbul report lcov",
         "test:circleci": "yarn test",
+        "contracts:gen": "contracts-gen",
         "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol"
     },
     "config": {
-        "abis": "generated-artifacts/@(AssetProxyOwner|MultiSigWallet|MultiSigWalletWithTimeLock|TestAssetProxyOwner|TestRejectEther).json"
+        "abis": "./generated-artifacts/@(AssetProxyOwner|MixinAuthorizable|MultiSigWallet|MultiSigWalletWithTimeLock|TestAssetProxyOwner|TestRejectEther).json",
+        "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
         "type": "git",
@@ -44,10 +46,11 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/multisig/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^2.0.0",
-        "@0x/contracts-test-utils": "^3.0.0",
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/sol-compiler": "^3.0.0",
+        "@0x/abi-gen": "^2.0.2",
+        "@0x/contracts-gen": "^1.0.1",
+        "@0x/contracts-test-utils": "^3.0.3",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/sol-compiler": "^3.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -64,15 +67,15 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^4.0.0",
-        "@0x/contracts-asset-proxy": "^1.0.1",
-        "@0x/contracts-erc20": "^1.0.1",
-        "@0x/types": "^2.0.0",
+        "@0x/base-contract": "^4.0.2",
+        "@0x/contracts-asset-proxy": "1.0.2",
+        "@0x/contracts-erc20": "1.0.2",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "ethereum-types": "^2.0.0",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/contracts/multisig/src/artifacts.ts b/contracts/multisig/src/artifacts.ts
new file mode 100644
index 000000000..7d8a85884
--- /dev/null
+++ b/contracts/multisig/src/artifacts.ts
@@ -0,0 +1,21 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+import { ContractArtifact } from 'ethereum-types';
+
+import * as AssetProxyOwner from '../generated-artifacts/AssetProxyOwner.json';
+import * as MixinAuthorizable from '../generated-artifacts/MixinAuthorizable.json';
+import * as MultiSigWallet from '../generated-artifacts/MultiSigWallet.json';
+import * as MultiSigWalletWithTimeLock from '../generated-artifacts/MultiSigWalletWithTimeLock.json';
+import * as TestAssetProxyOwner from '../generated-artifacts/TestAssetProxyOwner.json';
+import * as TestRejectEther from '../generated-artifacts/TestRejectEther.json';
+export const artifacts = {
+    MixinAuthorizable: MixinAuthorizable as ContractArtifact,
+    AssetProxyOwner: AssetProxyOwner as ContractArtifact,
+    MultiSigWallet: MultiSigWallet as ContractArtifact,
+    MultiSigWalletWithTimeLock: MultiSigWalletWithTimeLock as ContractArtifact,
+    TestAssetProxyOwner: TestAssetProxyOwner as ContractArtifact,
+    TestRejectEther: TestRejectEther as ContractArtifact,
+};
diff --git a/contracts/multisig/src/artifacts/index.ts b/contracts/multisig/src/artifacts/index.ts
deleted file mode 100644
index 326d79000..000000000
--- a/contracts/multisig/src/artifacts/index.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-import { ContractArtifact } from 'ethereum-types';
-
-import * as AssetProxyOwner from '../../generated-artifacts/AssetProxyOwner.json';
-import * as MultiSigWallet from '../../generated-artifacts/MultiSigWallet.json';
-import * as MultiSigWalletWithTimeLock from '../../generated-artifacts/MultiSigWalletWithTimeLock.json';
-import * as TestAssetProxyOwner from '../../generated-artifacts/TestAssetProxyOwner.json';
-import * as TestRejectEther from '../../generated-artifacts/TestRejectEther.json';
-
-export const artifacts = {
-    AssetProxyOwner: AssetProxyOwner as ContractArtifact,
-    MultiSigWallet: MultiSigWallet as ContractArtifact,
-    MultiSigWalletWithTimeLock: MultiSigWalletWithTimeLock as ContractArtifact,
-    TestAssetProxyOwner: TestAssetProxyOwner as ContractArtifact,
-    TestRejectEther: TestRejectEther as ContractArtifact,
-};
diff --git a/contracts/multisig/src/wrappers.ts b/contracts/multisig/src/wrappers.ts
new file mode 100644
index 000000000..81aab39da
--- /dev/null
+++ b/contracts/multisig/src/wrappers.ts
@@ -0,0 +1,11 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+export * from '../generated-wrappers/asset_proxy_owner';
+export * from '../generated-wrappers/mixin_authorizable';
+export * from '../generated-wrappers/multi_sig_wallet';
+export * from '../generated-wrappers/multi_sig_wallet_with_time_lock';
+export * from '../generated-wrappers/test_asset_proxy_owner';
+export * from '../generated-wrappers/test_reject_ether';
diff --git a/contracts/multisig/src/wrappers/index.ts b/contracts/multisig/src/wrappers/index.ts
deleted file mode 100644
index 43ab25704..000000000
--- a/contracts/multisig/src/wrappers/index.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-export * from '../../generated-wrappers/asset_proxy_owner';
-export * from '../../generated-wrappers/multi_sig_wallet';
-export * from '../../generated-wrappers/multi_sig_wallet_with_time_lock';
-export * from '../../generated-wrappers/test_asset_proxy_owner';
-export * from '../../generated-wrappers/test_reject_ether';
diff --git a/contracts/multisig/test/asset_proxy_owner.ts b/contracts/multisig/test/asset_proxy_owner.ts
index 62081554b..7bf4069cb 100644
--- a/contracts/multisig/test/asset_proxy_owner.ts
+++ b/contracts/multisig/test/asset_proxy_owner.ts
@@ -1,4 +1,3 @@
-import { artifacts as proxyArtifacts, MixinAuthorizableContract } from '@0x/contracts-asset-proxy';
 import {
     chaiSetup,
     constants,
@@ -26,6 +25,7 @@ import {
     AssetProxyOwnerExecutionFailureEventArgs,
     AssetProxyOwnerSubmissionEventArgs,
     AssetProxyOwnerWrapper,
+    MixinAuthorizableContract,
     TestAssetProxyOwnerContract,
 } from '../src';
 
@@ -58,12 +58,12 @@ describe('AssetProxyOwner', () => {
         notOwner = accounts[3];
         const initialOwner = accounts[0];
         erc20Proxy = await MixinAuthorizableContract.deployFrom0xArtifactAsync(
-            proxyArtifacts.MixinAuthorizable,
+            artifacts.MixinAuthorizable,
             provider,
             txDefaults,
         );
         erc721Proxy = await MixinAuthorizableContract.deployFrom0xArtifactAsync(
-            proxyArtifacts.MixinAuthorizable,
+            artifacts.MixinAuthorizable,
             provider,
             txDefaults,
         );
diff --git a/contracts/multisig/test/utils/asset_proxy_owner_wrapper.ts b/contracts/multisig/test/utils/asset_proxy_owner_wrapper.ts
index b6040d8e3..d5aaaf519 100644
--- a/contracts/multisig/test/utils/asset_proxy_owner_wrapper.ts
+++ b/contracts/multisig/test/utils/asset_proxy_owner_wrapper.ts
@@ -1,5 +1,3 @@
-import { artifacts as proxyArtifacts } from '@0x/contracts-asset-proxy';
-import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
 import { LogDecoder } from '@0x/contracts-test-utils';
 import { BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
@@ -16,7 +14,7 @@ export class AssetProxyOwnerWrapper {
     constructor(assetproxyOwnerContract: AssetProxyOwnerContract, provider: Provider) {
         this._assetProxyOwner = assetproxyOwnerContract;
         this._web3Wrapper = new Web3Wrapper(provider);
-        this._logDecoder = new LogDecoder(this._web3Wrapper, { ...artifacts, ...erc20Artifacts, ...proxyArtifacts });
+        this._logDecoder = new LogDecoder(this._web3Wrapper, artifacts);
     }
     public async submitTransactionAsync(
         destination: string,
diff --git a/contracts/multisig/tsconfig.json b/contracts/multisig/tsconfig.json
index ad1707e43..094f89413 100644
--- a/contracts/multisig/tsconfig.json
+++ b/contracts/multisig/tsconfig.json
@@ -1,17 +1,14 @@
 {
     "extends": "../../tsconfig",
-    "compilerOptions": {
-        "outDir": "lib",
-        "rootDir": ".",
-        "resolveJsonModule": true
-    },
+    "compilerOptions": { "outDir": "lib", "rootDir": ".", "resolveJsonModule": true },
     "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
     "files": [
-        "./generated-artifacts/AssetProxyOwner.json",
-        "./generated-artifacts/MultiSigWallet.json",
-        "./generated-artifacts/MultiSigWalletWithTimeLock.json",
-        "./generated-artifacts/TestAssetProxyOwner.json",
-        "./generated-artifacts/TestRejectEther.json"
+        "generated-artifacts/AssetProxyOwner.json",
+        "generated-artifacts/MixinAuthorizable.json",
+        "generated-artifacts/MultiSigWallet.json",
+        "generated-artifacts/MultiSigWalletWithTimeLock.json",
+        "generated-artifacts/TestAssetProxyOwner.json",
+        "generated-artifacts/TestRejectEther.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]
 }
diff --git a/contracts/test-utils/CHANGELOG.json b/contracts/test-utils/CHANGELOG.json
index 51b726e82..812bff732 100644
--- a/contracts/test-utils/CHANGELOG.json
+++ b/contracts/test-utils/CHANGELOG.json
@@ -1,10 +1,41 @@
 [
     {
+        "version": "3.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "version": "3.0.2",
+        "changes": [
+            {
+                "note": "Fake publish to enable pinning"
+            }
+        ],
+        "timestamp": 1549504360
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
+            },
+            {
+                "note": "Import `ZeroExTransaction` type instead of using type defined in this package",
+                "pr": 1576
             }
         ],
         "timestamp": 1549373905
diff --git a/contracts/test-utils/CHANGELOG.md b/contracts/test-utils/CHANGELOG.md
index a643b5735..b3fc98ab6 100644
--- a/contracts/test-utils/CHANGELOG.md
+++ b/contracts/test-utils/CHANGELOG.md
@@ -5,9 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v3.0.2 - _February 7, 2019_
+
+    * Fake publish to enable pinning
+
+## v3.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v3.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
+    * Import `ZeroExTransaction` type instead of using type defined in this package (#1576)
 
 ## v2.0.1 - _January 17, 2019_
 
diff --git a/contracts/test-utils/package.json b/contracts/test-utils/package.json
index e47561cdb..b379f470a 100644
--- a/contracts/test-utils/package.json
+++ b/contracts/test-utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-test-utils",
-    "version": "3.0.0",
+    "version": "3.0.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -40,19 +40,19 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/abi-gen": "^2.0.0",
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/sol-compiler": "^3.0.0",
-        "@0x/sol-coverage": "^2.0.0",
-        "@0x/sol-profiler": "^2.0.1",
-        "@0x/sol-trace": "^2.0.1",
-        "@0x/subproviders": "^3.0.0",
+        "@0x/abi-gen": "^2.0.2",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/sol-compiler": "^3.0.2",
+        "@0x/sol-coverage": "^2.0.2",
+        "@0x/sol-profiler": "^2.0.3",
+        "@0x/sol-trace": "^2.0.3",
+        "@0x/subproviders": "^3.0.2",
         "@0x/tslint-config": "^3.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "@types/bn.js": "^4.11.0",
         "@types/js-combinatorics": "^0.5.29",
         "@types/lodash": "4.14.104",
@@ -66,7 +66,7 @@
         "ethereumjs-util": "^5.1.1",
         "ethers": "~4.0.4",
         "js-combinatorics": "^0.5.3",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "make-promises-safe": "^1.1.0"
     },
     "publishConfig": {
diff --git a/contracts/test-utils/src/index.ts b/contracts/test-utils/src/index.ts
index 7880de0bf..5ac927e47 100644
--- a/contracts/test-utils/src/index.ts
+++ b/contracts/test-utils/src/index.ts
@@ -31,7 +31,6 @@ export {
     MarketBuyOrders,
     MarketSellOrders,
     ERC721TokenIdsByOwner,
-    SignedTransaction,
     OrderStatus,
     AllowanceAmountScenario,
     AssetDataScenario,
diff --git a/contracts/test-utils/src/transaction_factory.ts b/contracts/test-utils/src/transaction_factory.ts
index dbab3ade4..e6cd4c23f 100644
--- a/contracts/test-utils/src/transaction_factory.ts
+++ b/contracts/test-utils/src/transaction_factory.ts
@@ -1,10 +1,8 @@
-import { eip712Utils, generatePseudoRandomSalt } from '@0x/order-utils';
-import { SignatureType } from '@0x/types';
-import { signTypedDataUtils } from '@0x/utils';
+import { generatePseudoRandomSalt, transactionHashUtils } from '@0x/order-utils';
+import { SignatureType, SignedZeroExTransaction } from '@0x/types';
 import * as ethUtil from 'ethereumjs-util';
 
 import { signingUtils } from './signing_utils';
-import { SignedTransaction } from './types';
 
 export class TransactionFactory {
     private readonly _signerBuff: Buffer;
@@ -15,23 +13,25 @@ export class TransactionFactory {
         this._exchangeAddress = exchangeAddress;
         this._signerBuff = ethUtil.privateToAddress(this._privateKey);
     }
-    public newSignedTransaction(data: string, signatureType: SignatureType = SignatureType.EthSign): SignedTransaction {
+    public newSignedTransaction(
+        data: string,
+        signatureType: SignatureType = SignatureType.EthSign,
+    ): SignedZeroExTransaction {
         const salt = generatePseudoRandomSalt();
         const signerAddress = `0x${this._signerBuff.toString('hex')}`;
-        const executeTransactionData = {
+        const transaction = {
             salt,
             signerAddress,
             data,
+            verifyingContractAddress: this._exchangeAddress,
         };
 
-        const typedData = eip712Utils.createZeroExTransactionTypedData(executeTransactionData, this._exchangeAddress);
-        const eip712MessageBuffer = signTypedDataUtils.generateTypedDataHash(typedData);
-        const signature = signingUtils.signMessage(eip712MessageBuffer, this._privateKey, signatureType);
-        const signedTx = {
-            exchangeAddress: this._exchangeAddress,
+        const transactionHashBuffer = transactionHashUtils.getTransactionHashBuffer(transaction);
+        const signature = signingUtils.signMessage(transactionHashBuffer, this._privateKey, signatureType);
+        const signedTransaction = {
+            ...transaction,
             signature: `0x${signature.toString('hex')}`,
-            ...executeTransactionData,
         };
-        return signedTx;
+        return signedTransaction;
     }
 }
diff --git a/contracts/test-utils/src/types.ts b/contracts/test-utils/src/types.ts
index 60cb2b102..16c3a9f3d 100644
--- a/contracts/test-utils/src/types.ts
+++ b/contracts/test-utils/src/types.ts
@@ -107,14 +107,6 @@ export enum ContractName {
     BalanceThresholdFilter = 'BalanceThresholdFilter',
 }
 
-export interface SignedTransaction {
-    exchangeAddress: string;
-    salt: BigNumber;
-    signerAddress: string;
-    data: string;
-    signature: string;
-}
-
 export interface TransferAmountsByMatchOrders {
     // Left Maker
     amountBoughtByLeftMaker: BigNumber;
diff --git a/contracts/utils/CHANGELOG.json b/contracts/utils/CHANGELOG.json
index 187a81d70..bc887914b 100644
--- a/contracts/utils/CHANGELOG.json
+++ b/contracts/utils/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "2.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Fake publish to enable pinning"
+            }
+        ],
+        "timestamp": 1549504360
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/contracts/utils/CHANGELOG.md b/contracts/utils/CHANGELOG.md
index 4c46b4f95..dd0b91a61 100644
--- a/contracts/utils/CHANGELOG.md
+++ b/contracts/utils/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.2 - _February 7, 2019_
+
+    * Fake publish to enable pinning
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/contracts/utils/compiler.json b/contracts/utils/compiler.json
index 7473ea6d1..a54f547df 100644
--- a/contracts/utils/compiler.json
+++ b/contracts/utils/compiler.json
@@ -3,10 +3,7 @@
     "contractsDir": "./contracts",
     "useDockerisedSolc": true,
     "compilerSettings": {
-        "optimizer": {
-            "enabled": true,
-            "runs": 1000000
-        },
+        "optimizer": { "enabled": true, "runs": 1000000 },
         "outputSelection": {
             "*": {
                 "*": [
@@ -19,5 +16,13 @@
             }
         }
     },
-    "contracts": ["TestConstants", "TestLibBytes", "LibBytes", "Ownable", "IOwnable", "ReentrancyGuard", "SafeMath"]
+    "contracts": [
+        "src/LibBytes.sol",
+        "src/Ownable.sol",
+        "src/ReentrancyGuard.sol",
+        "src/SafeMath.sol",
+        "src/interfaces/IOwnable.sol",
+        "test/TestConstants.sol",
+        "test/TestLibBytes.sol"
+    ]
 }
diff --git a/contracts/utils/package.json b/contracts/utils/package.json
index f277b6673..91abc8043 100644
--- a/contracts/utils/package.json
+++ b/contracts/utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-utils",
-    "version": "2.0.0",
+    "version": "2.0.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,10 +29,12 @@
         "profiler:report:html": "istanbul report html && open coverage/index.html",
         "coverage:report:lcov": "istanbul report lcov",
         "test:circleci": "yarn test",
+        "contracts:gen": "contracts-gen",
         "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol"
     },
     "config": {
-        "abis": "generated-artifacts/@(IOwnable|Ownable|LibBytes|ReentrancyGuard|SafeMath|TestConstants|TestLibBytes).json"
+        "abis": "./generated-artifacts/@(IOwnable|LibBytes|Ownable|ReentrancyGuard|SafeMath|TestConstants|TestLibBytes).json",
+        "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
         "type": "git",
@@ -44,10 +46,11 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/utils/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^2.0.0",
-        "@0x/contracts-test-utils": "^3.0.0",
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/sol-compiler": "^3.0.0",
+        "@0x/abi-gen": "^2.0.2",
+        "@0x/contracts-gen": "^1.0.1",
+        "@0x/contracts-test-utils": "^3.0.3",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/sol-compiler": "^3.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
@@ -65,16 +68,16 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^4.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/base-contract": "^4.0.2",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "bn.js": "^4.11.8",
         "ethereum-types": "^2.0.0",
         "ethereumjs-util": "^5.1.1",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/contracts/utils/src/artifacts.ts b/contracts/utils/src/artifacts.ts
new file mode 100644
index 000000000..15a1abedf
--- /dev/null
+++ b/contracts/utils/src/artifacts.ts
@@ -0,0 +1,23 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+import { ContractArtifact } from 'ethereum-types';
+
+import * as IOwnable from '../generated-artifacts/IOwnable.json';
+import * as LibBytes from '../generated-artifacts/LibBytes.json';
+import * as Ownable from '../generated-artifacts/Ownable.json';
+import * as ReentrancyGuard from '../generated-artifacts/ReentrancyGuard.json';
+import * as SafeMath from '../generated-artifacts/SafeMath.json';
+import * as TestConstants from '../generated-artifacts/TestConstants.json';
+import * as TestLibBytes from '../generated-artifacts/TestLibBytes.json';
+export const artifacts = {
+    LibBytes: LibBytes as ContractArtifact,
+    Ownable: Ownable as ContractArtifact,
+    ReentrancyGuard: ReentrancyGuard as ContractArtifact,
+    SafeMath: SafeMath as ContractArtifact,
+    IOwnable: IOwnable as ContractArtifact,
+    TestConstants: TestConstants as ContractArtifact,
+    TestLibBytes: TestLibBytes as ContractArtifact,
+};
diff --git a/contracts/utils/src/artifacts/index.ts b/contracts/utils/src/artifacts/index.ts
deleted file mode 100644
index a5c2b215c..000000000
--- a/contracts/utils/src/artifacts/index.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-import { ContractArtifact } from 'ethereum-types';
-
-import * as IOwnable from '../../generated-artifacts/IOwnable.json';
-import * as LibBytes from '../../generated-artifacts/LibBytes.json';
-import * as Ownable from '../../generated-artifacts/Ownable.json';
-import * as ReentrancyGuard from '../../generated-artifacts/ReentrancyGuard.json';
-import * as SafeMath from '../../generated-artifacts/SafeMath.json';
-import * as TestConstants from '../../generated-artifacts/TestConstants.json';
-import * as TestLibBytes from '../../generated-artifacts/TestLibBytes.json';
-
-export const artifacts = {
-    TestConstants: TestConstants as ContractArtifact,
-    TestLibBytes: TestLibBytes as ContractArtifact,
-    IOwnable: IOwnable as ContractArtifact,
-    LibBytes: LibBytes as ContractArtifact,
-    Ownable: Ownable as ContractArtifact,
-    SafeMath: SafeMath as ContractArtifact,
-    ReentrancyGuard: ReentrancyGuard as ContractArtifact,
-};
diff --git a/contracts/utils/src/wrappers.ts b/contracts/utils/src/wrappers.ts
new file mode 100644
index 000000000..8748cb074
--- /dev/null
+++ b/contracts/utils/src/wrappers.ts
@@ -0,0 +1,12 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+export * from '../generated-wrappers/i_ownable';
+export * from '../generated-wrappers/lib_bytes';
+export * from '../generated-wrappers/ownable';
+export * from '../generated-wrappers/reentrancy_guard';
+export * from '../generated-wrappers/safe_math';
+export * from '../generated-wrappers/test_constants';
+export * from '../generated-wrappers/test_lib_bytes';
diff --git a/contracts/utils/src/wrappers/index.ts b/contracts/utils/src/wrappers/index.ts
deleted file mode 100644
index 823b7fa4b..000000000
--- a/contracts/utils/src/wrappers/index.ts
+++ /dev/null
@@ -1,2 +0,0 @@
-export * from '../../generated-wrappers/test_constants';
-export * from '../../generated-wrappers/test_lib_bytes';
diff --git a/contracts/utils/tsconfig.json b/contracts/utils/tsconfig.json
index 68251e6b0..efd71ff93 100644
--- a/contracts/utils/tsconfig.json
+++ b/contracts/utils/tsconfig.json
@@ -1,19 +1,15 @@
 {
     "extends": "../../tsconfig",
-    "compilerOptions": {
-        "outDir": "lib",
-        "rootDir": ".",
-        "resolveJsonModule": true
-    },
+    "compilerOptions": { "outDir": "lib", "rootDir": ".", "resolveJsonModule": true },
     "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
     "files": [
-        "./generated-artifacts/TestConstants.json",
-        "./generated-artifacts/TestLibBytes.json",
-        "./generated-artifacts/IOwnable.json",
-        "./generated-artifacts/Ownable.json",
-        "./generated-artifacts/LibBytes.json",
-        "./generated-artifacts/SafeMath.json",
-        "./generated-artifacts/ReentrancyGuard.json"
+        "generated-artifacts/IOwnable.json",
+        "generated-artifacts/LibBytes.json",
+        "generated-artifacts/Ownable.json",
+        "generated-artifacts/ReentrancyGuard.json",
+        "generated-artifacts/SafeMath.json",
+        "generated-artifacts/TestConstants.json",
+        "generated-artifacts/TestLibBytes.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]
 }
diff --git a/package.json b/package.json
index dccfe6513..af32a3c8f 100644
--- a/package.json
+++ b/package.json
@@ -32,6 +32,9 @@
         "build:ts": "tsc -b",
         "watch:ts": "tsc -b -w",
         "clean": "wsrun clean $PKG --fast-exit -r --parallel --exclude-missing",
+        "contracts:gen": "wsrun contracts:gen $PKG --fast-exit -r --parallel --exclude-missing",
+        "contracts:compile": "wsrun compile $PKG --fast-exit -r --stages --exclude-missing",
+        "contracts:watch": "wsrun watch $PKG --parallel --exclude-missing",
         "remove_node_modules": "lerna clean --yes; rm -rf node_modules",
         "rebuild": "run-s clean build",
         "rebuild:no_website": "run-s clean build:no_website",
@@ -81,7 +84,7 @@
         "lcov-result-merger": "^3.0.0",
         "lerna": "^3.0.0-beta.25",
         "npm-run-all": "^4.1.2",
-        "prettier": "^1.15.3",
+        "prettier": "^1.16.3",
         "source-map-support": "^0.5.6",
         "typescript": "3.0.1",
         "wsrun": "^2.2.0"
diff --git a/packages/0x.js/CHANGELOG.json b/packages/0x.js/CHANGELOG.json
index 1eab891a8..69381d7a0 100644
--- a/packages/0x.js/CHANGELOG.json
+++ b/packages/0x.js/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "4.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549504360,
+        "version": "4.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "4.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "4.0.0",
         "changes": [
             {
diff --git a/packages/0x.js/CHANGELOG.md b/packages/0x.js/CHANGELOG.md
index cca12fda4..7c14fb586 100644
--- a/packages/0x.js/CHANGELOG.md
+++ b/packages/0x.js/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v4.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v4.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v4.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/0x.js/package.json b/packages/0x.js/package.json
index 58cd439fd..b02176811 100644
--- a/packages/0x.js/package.json
+++ b/packages/0x.js/package.json
@@ -1,6 +1,6 @@
 {
     "name": "0x.js",
-    "version": "4.0.0",
+    "version": "4.0.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -42,10 +42,10 @@
     },
     "license": "Apache-2.0",
     "devDependencies": {
-        "@0x/abi-gen-wrappers": "^3.0.0",
+        "@0x/abi-gen-wrappers": "^3.0.2",
         "@0x/contract-addresses": "^2.2.1",
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/migrations": "^3.0.0",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/migrations": "^3.0.3",
         "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
@@ -72,16 +72,16 @@
         "webpack": "^4.20.2"
     },
     "dependencies": {
-        "@0x/assert": "^2.0.0",
-        "@0x/base-contract": "^4.0.0",
-        "@0x/contract-wrappers": "^6.0.1",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/order-watcher": "^3.0.0",
-        "@0x/subproviders": "^3.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/assert": "^2.0.2",
+        "@0x/base-contract": "^4.0.2",
+        "@0x/contract-wrappers": "^7.0.2",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/order-watcher": "^3.0.3",
+        "@0x/subproviders": "^3.0.2",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "@types/web3-provider-engine": "^14.0.0",
         "ethereum-types": "^2.0.0",
         "ethers": "~4.0.4",
diff --git a/packages/abi-gen-wrappers/CHANGELOG.json b/packages/abi-gen-wrappers/CHANGELOG.json
index 2603ae525..a7793c5d5 100644
--- a/packages/abi-gen-wrappers/CHANGELOG.json
+++ b/packages/abi-gen-wrappers/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "3.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
diff --git a/packages/abi-gen-wrappers/CHANGELOG.md b/packages/abi-gen-wrappers/CHANGELOG.md
index 793e1f157..93e11736c 100644
--- a/packages/abi-gen-wrappers/CHANGELOG.md
+++ b/packages/abi-gen-wrappers/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v3.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v3.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/abi-gen-wrappers/package.json b/packages/abi-gen-wrappers/package.json
index 2372aacda..c9682e28f 100644
--- a/packages/abi-gen-wrappers/package.json
+++ b/packages/abi-gen-wrappers/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/abi-gen-wrappers",
-    "version": "3.0.0",
+    "version": "3.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -30,19 +30,19 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/abi-gen-wrappers/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^2.0.0",
+        "@0x/abi-gen": "^2.0.2",
         "@0x/abi-gen-templates": "^2.0.0",
         "@0x/tslint-config": "^3.0.0",
-        "@0x/types": "^2.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/types": "^2.0.2",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "ethereum-types": "^2.0.0",
         "ethers": "~4.0.4",
         "lodash": "^4.17.11",
         "shx": "^0.2.2"
     },
     "dependencies": {
-        "@0x/base-contract": "^4.0.0"
+        "@0x/base-contract": "^4.0.2"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/abi-gen/CHANGELOG.json b/packages/abi-gen/CHANGELOG.json
index 66858db63..d7770c06d 100644
--- a/packages/abi-gen/CHANGELOG.json
+++ b/packages/abi-gen/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/packages/abi-gen/CHANGELOG.md b/packages/abi-gen/CHANGELOG.md
index d68608194..65c914cc9 100644
--- a/packages/abi-gen/CHANGELOG.md
+++ b/packages/abi-gen/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/abi-gen/package.json b/packages/abi-gen/package.json
index 3199eb120..d07e0a580 100644
--- a/packages/abi-gen/package.json
+++ b/packages/abi-gen/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/abi-gen",
-    "version": "2.0.0",
+    "version": "2.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -32,7 +32,7 @@
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/abi-gen/README.md",
     "dependencies": {
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
+        "@0x/utils": "^4.0.3",
         "chalk": "^2.3.0",
         "ethereum-types": "^2.0.0",
         "glob": "^7.1.2",
diff --git a/packages/assert/CHANGELOG.json b/packages/assert/CHANGELOG.json
index 814b5d148..e2231a676 100644
--- a/packages/assert/CHANGELOG.json
+++ b/packages/assert/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/packages/assert/CHANGELOG.md b/packages/assert/CHANGELOG.md
index 90fba7196..682115497 100644
--- a/packages/assert/CHANGELOG.md
+++ b/packages/assert/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/assert/package.json b/packages/assert/package.json
index e071e3992..551414de3 100644
--- a/packages/assert/package.json
+++ b/packages/assert/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/assert",
-    "version": "2.0.0",
+    "version": "2.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -44,9 +44,9 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/json-schemas": "^3.0.0",
+        "@0x/json-schemas": "^3.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
+        "@0x/utils": "^4.0.3",
         "lodash": "^4.17.11",
         "valid-url": "^1.0.9"
     },
diff --git a/packages/asset-buyer/CHANGELOG.json b/packages/asset-buyer/CHANGELOG.json
index 39d402084..80b02f2c6 100644
--- a/packages/asset-buyer/CHANGELOG.json
+++ b/packages/asset-buyer/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "5.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549504360,
+        "version": "5.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "5.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "5.0.0",
         "changes": [
             {
diff --git a/packages/asset-buyer/CHANGELOG.md b/packages/asset-buyer/CHANGELOG.md
index 5bb0d7274..c5977e3e4 100644
--- a/packages/asset-buyer/CHANGELOG.md
+++ b/packages/asset-buyer/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v5.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v5.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v5.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v5.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/asset-buyer/package.json b/packages/asset-buyer/package.json
index e4a8dcd6a..391a5d688 100644
--- a/packages/asset-buyer/package.json
+++ b/packages/asset-buyer/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/asset-buyer",
-    "version": "5.0.0",
+    "version": "5.0.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -36,16 +36,16 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/asset-buyer/README.md",
     "dependencies": {
-        "@0x/assert": "^2.0.0",
-        "@0x/connect": "^4.0.0",
-        "@0x/contract-wrappers": "^6.0.1",
-        "@0x/json-schemas": "^3.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/subproviders": "^3.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/assert": "^2.0.2",
+        "@0x/connect": "^4.0.3",
+        "@0x/contract-wrappers": "^7.0.2",
+        "@0x/json-schemas": "^3.0.2",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/subproviders": "^3.0.2",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "ethereum-types": "^2.0.0",
         "lodash": "^4.17.11"
     },
diff --git a/packages/base-contract/CHANGELOG.json b/packages/base-contract/CHANGELOG.json
index 070f32d1d..d3cf76696 100644
--- a/packages/base-contract/CHANGELOG.json
+++ b/packages/base-contract/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "4.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "4.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "4.0.0",
         "changes": [
             {
diff --git a/packages/base-contract/CHANGELOG.md b/packages/base-contract/CHANGELOG.md
index f6d3ec615..68de790bc 100644
--- a/packages/base-contract/CHANGELOG.md
+++ b/packages/base-contract/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v4.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v4.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/base-contract/package.json b/packages/base-contract/package.json
index 1dbc6a854..d9970b7f4 100644
--- a/packages/base-contract/package.json
+++ b/packages/base-contract/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/base-contract",
-    "version": "4.0.0",
+    "version": "4.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -41,8 +41,8 @@
     },
     "dependencies": {
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "ethereum-types": "^2.0.0",
         "ethers": "~4.0.4",
         "lodash": "^4.17.11"
diff --git a/packages/connect/CHANGELOG.json b/packages/connect/CHANGELOG.json
index 45a1b80f8..d7e557146 100644
--- a/packages/connect/CHANGELOG.json
+++ b/packages/connect/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "4.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549504360,
+        "version": "4.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "4.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "4.0.0",
         "changes": [
             {
diff --git a/packages/connect/CHANGELOG.md b/packages/connect/CHANGELOG.md
index d0172b951..3094d2251 100644
--- a/packages/connect/CHANGELOG.md
+++ b/packages/connect/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v4.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v4.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v4.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/connect/package.json b/packages/connect/package.json
index b0e1fd3b2..a9648594c 100644
--- a/packages/connect/package.json
+++ b/packages/connect/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/connect",
-    "version": "4.0.0",
+    "version": "4.0.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -44,12 +44,12 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/connect/README.md",
     "dependencies": {
-        "@0x/assert": "^2.0.0",
-        "@0x/json-schemas": "^3.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/assert": "^2.0.2",
+        "@0x/json-schemas": "^3.0.2",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
+        "@0x/utils": "^4.0.3",
         "lodash": "^4.17.11",
         "query-string": "^6.0.0",
         "sinon": "^4.0.0",
diff --git a/packages/contract-wrappers/CHANGELOG.json b/packages/contract-wrappers/CHANGELOG.json
index 413563f80..73c8e6070 100644
--- a/packages/contract-wrappers/CHANGELOG.json
+++ b/packages/contract-wrappers/CHANGELOG.json
@@ -1,13 +1,39 @@
 [
     {
-        "version": "6.0.1",
+        "version": "7.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549504360,
+        "version": "7.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "7.0.0",
         "changes": [
             {
                 "note": "Fix OrderValidatorWrapper constructor to use the correct address",
                 "pr": 1568
+            },
+            {
+                "note": "Use new `ZeroExTransaction` interface",
+                "pr": 1576
+            },
+            {
+                "note": "Rename `getTransactionHex` to `getTransactionHashHex`",
+                "pr": 1576
             }
         ],
-        "timestamp": 1549373905
+        "timestamp": 1549452781
     },
     {
         "version": "6.0.0",
diff --git a/packages/contract-wrappers/CHANGELOG.md b/packages/contract-wrappers/CHANGELOG.md
index 03cb40fac..2e174e767 100644
--- a/packages/contract-wrappers/CHANGELOG.md
+++ b/packages/contract-wrappers/CHANGELOG.md
@@ -5,9 +5,19 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
-## v6.0.1 - _February 5, 2019_
+## v7.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v7.0.1 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v7.0.0 - _February 6, 2019_
 
     * Fix OrderValidatorWrapper constructor to use the correct address (#1568)
+    * Use new `ZeroExTransaction` interface (#1576)
+    * Rename `getTransactionHex` to `getTransactionHashHex` (#1576)
 
 ## v6.0.0 - _Invalid date_
 
diff --git a/packages/contract-wrappers/package.json b/packages/contract-wrappers/package.json
index 562eba81c..7ea270eb5 100644
--- a/packages/contract-wrappers/package.json
+++ b/packages/contract-wrappers/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contract-wrappers",
-    "version": "6.0.1",
+    "version": "7.0.2",
     "description": "Smart TS wrappers for 0x smart contracts",
     "keywords": [
         "0xproject",
@@ -37,9 +37,9 @@
         "node": ">=6.0.0"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/migrations": "^3.0.0",
-        "@0x/subproviders": "^3.0.0",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/migrations": "^3.0.3",
+        "@0x/subproviders": "^3.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
@@ -65,18 +65,18 @@
         "web3-provider-engine": "14.0.6"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^3.0.0",
-        "@0x/assert": "^2.0.0",
+        "@0x/abi-gen-wrappers": "^3.0.2",
+        "@0x/assert": "^2.0.2",
         "@0x/contract-addresses": "^2.2.1",
         "@0x/contract-artifacts": "^1.3.0",
-        "@0x/contracts-test-utils": "^3.0.0",
-        "@0x/fill-scenarios": "^2.0.0",
-        "@0x/json-schemas": "^3.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/contracts-test-utils": "^3.0.3",
+        "@0x/fill-scenarios": "^2.0.3",
+        "@0x/json-schemas": "^3.0.2",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "ethereum-types": "^2.0.0",
         "ethereumjs-abi": "0.6.5",
         "ethereumjs-blockstream": "6.0.0",
diff --git a/packages/contract-wrappers/src/utils/transaction_encoder.ts b/packages/contract-wrappers/src/utils/transaction_encoder.ts
index 0cf08a8fe..307487a9b 100644
--- a/packages/contract-wrappers/src/utils/transaction_encoder.ts
+++ b/packages/contract-wrappers/src/utils/transaction_encoder.ts
@@ -1,9 +1,9 @@
 import { ExchangeContract } from '@0x/abi-gen-wrappers';
 
 import { schemas } from '@0x/json-schemas';
-import { eip712Utils } from '@0x/order-utils';
+import { transactionHashUtils } from '@0x/order-utils';
 import { Order, SignedOrder } from '@0x/types';
-import { BigNumber, signTypedDataUtils } from '@0x/utils';
+import { BigNumber } from '@0x/utils';
 import _ = require('lodash');
 
 import { assert } from './assert';
@@ -19,23 +19,22 @@ export class TransactionEncoder {
         this._exchangeInstance = exchangeInstance;
     }
     /**
-     * Encodes the transaction data for use with the Exchange contract.
+     * Hashes the transaction data for use with the Exchange contract.
      * @param data The ABI Encoded 0x Exchange method. I.e fillOrder
      * @param salt A random value to provide uniqueness and prevent replay attacks.
      * @param signerAddress The address which will sign this transaction.
-     * @return An unsigned hex encoded transaction for use in 0x Exchange executeTransaction.
+     * @return The hash of the 0x transaction.
      */
-    public getTransactionHex(data: string, salt: BigNumber, signerAddress: string): string {
+    public getTransactionHashHex(data: string, salt: BigNumber, signerAddress: string): string {
         const exchangeAddress = this._getExchangeContract().address;
-        const executeTransactionData = {
+        const transaction = {
+            verifyingContractAddress: exchangeAddress,
             salt,
             signerAddress,
             data,
         };
-        const typedData = eip712Utils.createZeroExTransactionTypedData(executeTransactionData, exchangeAddress);
-        const eip712MessageBuffer = signTypedDataUtils.generateTypedDataHash(typedData);
-        const messageHex = `0x${eip712MessageBuffer.toString('hex')}`;
-        return messageHex;
+        const hashHex = transactionHashUtils.getTransactionHashHex(transaction);
+        return hashHex;
     }
     /**
      * Encodes a fillOrder transaction.
diff --git a/packages/contract-wrappers/test/transaction_encoder_test.ts b/packages/contract-wrappers/test/transaction_encoder_test.ts
index ef9eb2cf3..a996b9f08 100644
--- a/packages/contract-wrappers/test/transaction_encoder_test.ts
+++ b/packages/contract-wrappers/test/transaction_encoder_test.ts
@@ -83,8 +83,8 @@ describe('TransactionEncoder', () => {
             signerAddress: string = takerAddress,
         ): Promise<void> => {
             const salt = generatePseudoRandomSalt();
-            const encodedTransaction = encoder.getTransactionHex(data, salt, signerAddress);
-            const signature = await signatureUtils.ecSignHashAsync(provider, encodedTransaction, signerAddress);
+            const transactionHash = encoder.getTransactionHashHex(data, salt, signerAddress);
+            const signature = await signatureUtils.ecSignHashAsync(provider, transactionHash, signerAddress);
             txHash = await contractWrappers.exchange.executeTransactionAsync(
                 salt,
                 signerAddress,
diff --git a/packages/contracts-gen/.npmignore b/packages/contracts-gen/.npmignore
new file mode 100644
index 000000000..d645458f6
--- /dev/null
+++ b/packages/contracts-gen/.npmignore
@@ -0,0 +1,6 @@
+.*
+yarn-error.log
+/src/
+/scripts/
+tsconfig.json
+/lib/monorepo_scripts/
diff --git a/packages/contracts-gen/CHANGELOG.json b/packages/contracts-gen/CHANGELOG.json
new file mode 100644
index 000000000..f1a523c30
--- /dev/null
+++ b/packages/contracts-gen/CHANGELOG.json
@@ -0,0 +1,11 @@
+[
+    {
+        "version": "1.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    }
+]
diff --git a/packages/contracts-gen/CHANGELOG.md b/packages/contracts-gen/CHANGELOG.md
new file mode 100644
index 000000000..e046c6a0a
--- /dev/null
+++ b/packages/contracts-gen/CHANGELOG.md
@@ -0,0 +1,10 @@
+<!--
+changelogUtils.file is auto-generated using the monorepo-scripts package. Don't edit directly.
+Edit the package's CHANGELOG.json file only.
+-->
+
+CHANGELOG
+
+## v1.0.1 - _February 7, 2019_
+
+    * Dependencies updated
diff --git a/packages/contracts-gen/README.md b/packages/contracts-gen/README.md
new file mode 100644
index 000000000..feaf9e65f
--- /dev/null
+++ b/packages/contracts-gen/README.md
@@ -0,0 +1,76 @@
+# Contracts Gen
+
+This package allows you to generate boilerplate TypeScript code and configs for smart contracts packages.
+
+## Installation
+
+`yarn add -g @0x/contracts-gen`
+
+## Usage
+
+Run it from within your smart contracts packages.
+
+```bash
+contracts-gen
+```
+
+You should run this tool after each time you move your contracts around to regenerate boilerplate code and configs.
+
+## What can it generate
+
+This tool does the following:
+
+-   Reads your `compiler.json`. Specifically the list of smart contracts.
+-   Creates `wrapper.ts` file which exports all contract wrappers.
+-   Creates `artifacts.ts` file which exports all contract artifacts.
+-   Generates list of JSON artifact files in `tsconfig.json`
+-   Generates a glob for abi-gen in `package.json`
+
+On top of that - if your `compiler.json` has contracts referenced just by name - it will resolve the name to relative path and put it there.
+It also sorts all the lists in it's output leading to smaller and cleaner diffs.
+
+## Contributing
+
+We welcome improvements and fixes from the wider community! To report bugs within this package, please create an issue in this repository.
+
+Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
+
+### Install dependencies
+
+If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:
+
+```bash
+yarn config set workspaces-experimental true
+```
+
+Then install dependencies
+
+```bash
+yarn install
+```
+
+### Build
+
+To build this package and all other monorepo packages that it depends on, run the following from the monorepo root directory:
+
+```bash
+PKG=@0x/contracts-gen yarn build
+```
+
+Or continuously rebuild on change:
+
+```bash
+PKG=@0x/contracts-gen yarn watch
+```
+
+### Clean
+
+```bash
+yarn clean
+```
+
+### Lint
+
+```bash
+yarn lint
+```
diff --git a/packages/contracts-gen/bin/contracts-gen.js b/packages/contracts-gen/bin/contracts-gen.js
new file mode 100755
index 000000000..ec6ab4db6
--- /dev/null
+++ b/packages/contracts-gen/bin/contracts-gen.js
@@ -0,0 +1,2 @@
+#!/usr/bin/env node
+require('../lib/src/contracts-gen.js');
diff --git a/packages/contracts-gen/package.json b/packages/contracts-gen/package.json
new file mode 100644
index 000000000..fdf22ab45
--- /dev/null
+++ b/packages/contracts-gen/package.json
@@ -0,0 +1,49 @@
+{
+    "name": "@0x/contracts-gen",
+    "version": "1.0.1",
+    "engines": {
+        "node": ">=6.12"
+    },
+    "description": "Generates boilerplate code for smart contracts packages",
+    "main": "lib/src/index.js",
+    "types": "lib/src/index.d.ts",
+    "scripts": {
+        "lint": "tslint --format stylish --project .",
+        "clean": "shx rm -rf lib",
+        "build": "tsc -b",
+        "build:ci": "yarn build"
+    },
+    "bin": {
+        "contracts-gen": "bin/contracts-gen.js"
+    },
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/0xProject/0x-monorepo.git"
+    },
+    "license": "Apache-2.0",
+    "bugs": {
+        "url": "https://github.com/0xProject/0x-monorepo/issues"
+    },
+    "homepage": "https://github.com/0xProject/0x-monorepo/packages/contracts-gen/README.md",
+    "dependencies": {
+        "@0x/sol-resolver": "^2.0.2",
+        "@0x/types": "^2.0.2",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "ethereum-types": "^2.0.0",
+        "lodash": "^4.17.11",
+        "prettier": "^1.16.3",
+        "to-snake-case": "^1.0.0"
+    },
+    "devDependencies": {
+        "@0x/tslint-config": "^3.0.0",
+        "@types/node": "*",
+        "@types/prettier": "^1.15.2",
+        "shx": "^0.2.2",
+        "tslint": "5.11.0",
+        "typescript": "3.0.1"
+    },
+    "publishConfig": {
+        "access": "public"
+    }
+}
diff --git a/packages/contracts-gen/src/contracts-gen.ts b/packages/contracts-gen/src/contracts-gen.ts
new file mode 100644
index 000000000..0160a8204
--- /dev/null
+++ b/packages/contracts-gen/src/contracts-gen.ts
@@ -0,0 +1,175 @@
+#!/usr/bin/env node
+
+import { NameResolver } from '@0x/sol-resolver';
+import { PackageJSON } from '@0x/types';
+import { logUtils } from '@0x/utils';
+import { CompilerOptions } from 'ethereum-types';
+import * as fs from 'fs';
+import * as _ from 'lodash';
+import * as path from 'path';
+import * as prettier from 'prettier';
+import toSnakeCase = require('to-snake-case');
+
+const SOLIDITY_EXTENSION = '.sol';
+const DEFAULT_ARTIFACTS_DIR = 'artifacts';
+const DEFAULT_CONTRACTS_DIR = 'contracts';
+const DEFAULT_WRAPPERS_DIR = 'generated-wrappers';
+const AUTO_GENERATED_BANNER = `/*
+* -----------------------------------------------------------------------------
+* Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+* -----------------------------------------------------------------------------
+*/`;
+const AUTO_GENERATED_BANNER_FOR_LISTS = `This list is auto-generated by contracts-gen. Don't edit manually.`;
+
+(async () => {
+    const packageDir = process.cwd();
+    const compilerJSON = readJSONFile<CompilerOptions>('compiler.json');
+    const contracts = compilerJSON.contracts;
+    const contractsDir = compilerJSON.contractsDir || DEFAULT_CONTRACTS_DIR;
+    const artifactsDir = compilerJSON.artifactsDir || DEFAULT_ARTIFACTS_DIR;
+    const wrappersDir = DEFAULT_WRAPPERS_DIR;
+    if (!_.isArray(contracts)) {
+        throw new Error('Unable to run the generator bacause contracts key in compiler.json is not of type array');
+    }
+    const prettierConfig = await prettier.resolveConfig(packageDir);
+    generateCompilerJSONContractsList(contracts, contractsDir, prettierConfig);
+    generateArtifactsTs(contracts, artifactsDir, prettierConfig);
+    generateWrappersTs(contracts, wrappersDir, prettierConfig);
+    generateTsConfigJSONFilesList(contracts, artifactsDir, prettierConfig);
+    generatePackageJSONABIConfig(contracts, artifactsDir, prettierConfig);
+    process.exit(0);
+})().catch(err => {
+    logUtils.log(err);
+    process.exit(1);
+});
+
+function generateCompilerJSONContractsList(
+    contracts: string[],
+    contractsDir: string,
+    prettierConfig: prettier.Options | null,
+): void {
+    const COMPILER_JSON_FILE_PATH = 'compiler.json';
+    const compilerJSON = readJSONFile<CompilerOptions>(COMPILER_JSON_FILE_PATH);
+    compilerJSON.contracts = _.map(contracts, contract => {
+        if (contract.endsWith(SOLIDITY_EXTENSION)) {
+            // If it's already a relative path - NO-OP.
+            return contract;
+        } else {
+            // If it's just a contract name - resolve it and rewrite.
+            return new NameResolver(contractsDir).resolve(contract).path;
+        }
+    });
+    compilerJSON.contracts = _.sortBy(compilerJSON.contracts);
+    const compilerJSONString = JSON.stringify(compilerJSON);
+    const formattedCompilerJSON = prettier.format(compilerJSONString, {
+        ...prettierConfig,
+        filepath: COMPILER_JSON_FILE_PATH,
+    });
+    fs.writeFileSync(COMPILER_JSON_FILE_PATH, formattedCompilerJSON);
+}
+
+function generateArtifactsTs(contracts: string[], artifactsDir: string, prettierConfig: prettier.Options | null): void {
+    const imports = _.map(contracts, contract => {
+        const contractName = path.basename(contract, SOLIDITY_EXTENSION);
+        const importPath = path.join('..', artifactsDir, `${contractName}.json`);
+        return `import * as ${contractName} from '${importPath}';`;
+    });
+    const sortedImports = _.sortBy(imports);
+    const artifacts = _.map(contracts, contract => {
+        const contractName = path.basename(contract, SOLIDITY_EXTENSION);
+        if (contractName === 'ZRXToken') {
+            // HACK(albrow): "as any" hack still required here because ZRXToken does not
+            // conform to the v2 artifact type.
+            return `${contractName}: (${contractName} as any) as ContractArtifact,`;
+        } else {
+            return `${contractName}: ${contractName} as ContractArtifact,`;
+        }
+    });
+    const artifactsTs = `
+    ${AUTO_GENERATED_BANNER}
+    import { ContractArtifact } from 'ethereum-types';
+
+    ${sortedImports.join('\n')}
+    export const artifacts = {${artifacts.join('\n')}};
+    `;
+    const ARTIFACTS_TS_FILE_PATH = 'src/artifacts.ts';
+    const formattedArtifactsTs = prettier.format(artifactsTs, { ...prettierConfig, filepath: ARTIFACTS_TS_FILE_PATH });
+    fs.writeFileSync(ARTIFACTS_TS_FILE_PATH, formattedArtifactsTs);
+}
+
+function generateWrappersTs(contracts: string[], wrappersDir: string, prettierConfig: prettier.Options | null): void {
+    const imports = _.map(contracts, contract => {
+        const contractName = path.basename(contract, SOLIDITY_EXTENSION);
+        const outputFileName = makeOutputFileName(contractName);
+        const exportPath = path.join('..', wrappersDir, outputFileName);
+        return `export * from '${exportPath}';`;
+    });
+    const sortedImports = _.sortBy(imports);
+    const wrappersTs = `
+    ${AUTO_GENERATED_BANNER}
+    ${sortedImports.join('\n')}
+    `;
+    const WRAPPERS_TS_FILE_PATH = 'src/wrappers.ts';
+    const formattedArtifactsTs = prettier.format(wrappersTs, { ...prettierConfig, filepath: WRAPPERS_TS_FILE_PATH });
+    fs.writeFileSync(WRAPPERS_TS_FILE_PATH, formattedArtifactsTs);
+}
+
+function generateTsConfigJSONFilesList(
+    contracts: string[],
+    artifactsDir: string,
+    prettierConfig: prettier.Options | null,
+): void {
+    const TS_CONFIG_FILE_PATH = 'tsconfig.json';
+    const tsConfig = readJSONFile<any>(TS_CONFIG_FILE_PATH);
+    tsConfig.files = _.map(contracts, contract => {
+        const contractName = path.basename(contract, SOLIDITY_EXTENSION);
+        const artifactPath = path.join(artifactsDir, `${contractName}.json`);
+        return artifactPath;
+    });
+    tsConfig.files = _.sortBy(tsConfig.files);
+    const tsConfigString = JSON.stringify(tsConfig);
+    const formattedTsConfig = prettier.format(tsConfigString, { ...prettierConfig, filepath: TS_CONFIG_FILE_PATH });
+    fs.writeFileSync(TS_CONFIG_FILE_PATH, formattedTsConfig);
+}
+
+function generatePackageJSONABIConfig(
+    contracts: string[],
+    artifactsDir: string,
+    prettierConfig: prettier.Options | null,
+): void {
+    let packageJSON = readJSONFile<PackageJSON>('package.json');
+    const contractNames = _.map(contracts, contract => {
+        const contractName = path.basename(contract, SOLIDITY_EXTENSION);
+        return contractName;
+    });
+    const sortedContractNames = _.sortBy(contractNames);
+    packageJSON = {
+        ...packageJSON,
+        config: {
+            ...packageJSON.config,
+            'abis:comment': AUTO_GENERATED_BANNER_FOR_LISTS,
+            abis: `${artifactsDir}/@(${sortedContractNames.join('|')}).json`,
+        },
+    };
+    const PACKAGE_JSON_FILE_PATH = 'package.json';
+    const packageJSONString = JSON.stringify(packageJSON);
+    const formattedPackageJSON = prettier.format(packageJSONString, {
+        ...prettierConfig,
+        filepath: PACKAGE_JSON_FILE_PATH,
+    });
+    fs.writeFileSync(PACKAGE_JSON_FILE_PATH, formattedPackageJSON);
+}
+
+function makeOutputFileName(name: string): string {
+    let fileName = toSnakeCase(name);
+    // HACK: Snake case doesn't make a lot of sense for abbreviated names but we can't reliably detect abbreviations
+    // so we special-case the abbreviations we use.
+    fileName = fileName.replace('z_r_x', 'zrx').replace('e_r_c', 'erc');
+    return fileName;
+}
+
+function readJSONFile<T>(filePath: string): T {
+    const JSONString = fs.readFileSync(filePath, 'utf8');
+    const parsed: T = JSON.parse(JSONString);
+    return parsed;
+}
diff --git a/packages/contracts-gen/src/index.ts b/packages/contracts-gen/src/index.ts
new file mode 100644
index 000000000..c5f4b01f1
--- /dev/null
+++ b/packages/contracts-gen/src/index.ts
@@ -0,0 +1,6 @@
+/**
+ * This module is a CLI tool. As soon as you run it - it starts doing stuff.
+ * At the same time - our installation tests assume that you can import package without causing side effects.
+ * That's why our main entry point it empty. No side effects. But our secondary entry point - contracts-gen.ts is a CLI tool and starts running as soon as you import/run it.
+ */
+export {};
diff --git a/packages/contracts-gen/tsconfig.json b/packages/contracts-gen/tsconfig.json
new file mode 100644
index 000000000..233008d61
--- /dev/null
+++ b/packages/contracts-gen/tsconfig.json
@@ -0,0 +1,8 @@
+{
+    "extends": "../../tsconfig",
+    "compilerOptions": {
+        "outDir": "lib",
+        "rootDir": "."
+    },
+    "include": ["./src/**/*"]
+}
diff --git a/packages/contracts-gen/tslint.json b/packages/contracts-gen/tslint.json
new file mode 100644
index 000000000..dd9053357
--- /dev/null
+++ b/packages/contracts-gen/tslint.json
@@ -0,0 +1,3 @@
+{
+    "extends": ["@0x/tslint-config"]
+}
diff --git a/packages/dev-tools-pages/package.json b/packages/dev-tools-pages/package.json
index 3a3345e82..80ff16a44 100644
--- a/packages/dev-tools-pages/package.json
+++ b/packages/dev-tools-pages/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/dev-tools-pages",
-    "version": "0.0.15",
+    "version": "0.0.18",
     "engines": {
         "node": ">=6.12"
     },
@@ -26,7 +26,7 @@
     },
     "license": "Apache-2.0",
     "dependencies": {
-        "@0x/react-shared": "^2.0.0",
+        "@0x/react-shared": "^2.0.3",
         "basscss": "^8.0.3",
         "bowser": "^1.9.3",
         "highlight.js": "^9.13.1",
diff --git a/packages/dev-utils/CHANGELOG.json b/packages/dev-utils/CHANGELOG.json
index 141ac0eb6..ce6cfede5 100644
--- a/packages/dev-utils/CHANGELOG.json
+++ b/packages/dev-utils/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/packages/dev-utils/CHANGELOG.md b/packages/dev-utils/CHANGELOG.md
index a89a07a90..41e2ca88a 100644
--- a/packages/dev-utils/CHANGELOG.md
+++ b/packages/dev-utils/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/dev-utils/package.json b/packages/dev-utils/package.json
index 41956765b..89298f4db 100644
--- a/packages/dev-utils/package.json
+++ b/packages/dev-utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/dev-utils",
-    "version": "2.0.0",
+    "version": "2.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -41,11 +41,11 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/subproviders": "^3.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/subproviders": "^3.0.2",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "@types/web3-provider-engine": "^14.0.0",
         "chai": "^4.0.1",
         "ethereum-types": "^2.0.0",
diff --git a/packages/fill-scenarios/CHANGELOG.json b/packages/fill-scenarios/CHANGELOG.json
index 45ad00308..8615d137b 100644
--- a/packages/fill-scenarios/CHANGELOG.json
+++ b/packages/fill-scenarios/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "2.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549504360,
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/packages/fill-scenarios/CHANGELOG.md b/packages/fill-scenarios/CHANGELOG.md
index d483661db..e87652e7d 100644
--- a/packages/fill-scenarios/CHANGELOG.md
+++ b/packages/fill-scenarios/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/fill-scenarios/package.json b/packages/fill-scenarios/package.json
index 5bde3f23e..523bc07c1 100644
--- a/packages/fill-scenarios/package.json
+++ b/packages/fill-scenarios/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/fill-scenarios",
-    "version": "2.0.0",
+    "version": "2.0.3",
     "description": "0x order fill scenario generator",
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
@@ -28,14 +28,14 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^3.0.0",
-        "@0x/base-contract": "^4.0.0",
+        "@0x/abi-gen-wrappers": "^3.0.2",
+        "@0x/base-contract": "^4.0.2",
         "@0x/contract-artifacts": "^1.3.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "ethereum-types": "^2.0.0",
         "ethers": "~4.0.4",
         "lodash": "^4.17.11"
diff --git a/packages/instant/package.json b/packages/instant/package.json
index 3b7055595..0fe45e963 100644
--- a/packages/instant/package.json
+++ b/packages/instant/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/instant",
-    "version": "1.0.9",
+    "version": "1.0.12",
     "engines": {
         "node": ">=6.12"
     },
@@ -42,15 +42,15 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/instant/README.md",
     "dependencies": {
-        "@0x/assert": "^2.0.0",
-        "@0x/asset-buyer": "^5.0.0",
-        "@0x/json-schemas": "^3.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/subproviders": "^3.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/assert": "^2.0.2",
+        "@0x/asset-buyer": "^5.0.3",
+        "@0x/json-schemas": "^3.0.2",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/subproviders": "^3.0.2",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "babel-runtime": "^6.26.0",
         "bowser": "^1.9.4",
         "copy-to-clipboard": "^3.0.8",
diff --git a/packages/json-schemas/CHANGELOG.json b/packages/json-schemas/CHANGELOG.json
index 869f8bdf1..a6ae0160f 100644
--- a/packages/json-schemas/CHANGELOG.json
+++ b/packages/json-schemas/CHANGELOG.json
@@ -1,10 +1,32 @@
 [
     {
+        "version": "3.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
+            },
+            {
+                "note": "Add `verifyingContractAddress` to `zeroExTransactionSchema`",
+                "pr": 1576
             }
         ],
         "timestamp": 1549373905
diff --git a/packages/json-schemas/CHANGELOG.md b/packages/json-schemas/CHANGELOG.md
index ea94cbaf4..91426a687 100644
--- a/packages/json-schemas/CHANGELOG.md
+++ b/packages/json-schemas/CHANGELOG.md
@@ -5,9 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v3.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v3.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
+    * Add `verifyingContractAddress` to `zeroExTransactionSchema` (#1576)
 
 ## v2.1.7 - _January 15, 2019_
 
diff --git a/packages/json-schemas/package.json b/packages/json-schemas/package.json
index a1966897f..0c101aa28 100644
--- a/packages/json-schemas/package.json
+++ b/packages/json-schemas/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/json-schemas",
-    "version": "3.0.0",
+    "version": "3.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -46,7 +46,7 @@
     },
     "devDependencies": {
         "@0x/tslint-config": "^3.0.0",
-        "@0x/utils": "^4.0.1",
+        "@0x/utils": "^4.0.3",
         "@types/lodash.foreach": "^4.5.3",
         "@types/lodash.values": "^4.3.3",
         "@types/mocha": "^2.2.42",
diff --git a/packages/json-schemas/schemas/zero_ex_transaction_schema.json b/packages/json-schemas/schemas/zero_ex_transaction_schema.json
index 0c714f14d..ffdf1f229 100644
--- a/packages/json-schemas/schemas/zero_ex_transaction_schema.json
+++ b/packages/json-schemas/schemas/zero_ex_transaction_schema.json
@@ -1,10 +1,11 @@
 {
     "id": "/zeroExTransactionSchema",
     "properties": {
+        "verifyingContractAddress": { "$ref": "/addressSchema" },
         "data": { "$ref": "/hexSchema" },
         "signerAddress": { "$ref": "/addressSchema" },
         "salt": { "$ref": "/wholeNumberSchema" }
     },
-    "required": ["data", "salt", "signerAddress"],
+    "required": ["verifyingContractAddress", "data", "salt", "signerAddress"],
     "type": "object"
 }
diff --git a/packages/metacoin/package.json b/packages/metacoin/package.json
index 63b137df0..3afe8eb8c 100644
--- a/packages/metacoin/package.json
+++ b/packages/metacoin/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/metacoin",
-    "version": "0.0.37",
+    "version": "0.0.39",
     "engines": {
         "node": ">=6.12"
     },
@@ -24,23 +24,24 @@
         "profiler:report:html": "istanbul report html && open coverage/index.html",
         "coverage:report:lcov": "istanbul report lcov",
         "test:circleci": "yarn test:coverage",
-        "compile": "sol-compiler compile"
+        "compile": "sol-compiler",
+        "watch": "sol-compiler -w"
     },
     "author": "",
     "license": "Apache-2.0",
     "dependencies": {
-        "@0x/abi-gen": "^2.0.0",
+        "@0x/abi-gen": "^2.0.2",
         "@0x/abi-gen-templates": "^2.0.0",
-        "@0x/base-contract": "^4.0.0",
-        "@0x/sol-coverage": "^2.0.0",
-        "@0x/sol-profiler": "^2.0.1",
-        "@0x/sol-trace": "^2.0.1",
-        "@0x/subproviders": "^3.0.0",
+        "@0x/base-contract": "^4.0.2",
+        "@0x/sol-coverage": "^2.0.2",
+        "@0x/sol-profiler": "^2.0.3",
+        "@0x/sol-trace": "^2.0.3",
+        "@0x/subproviders": "^3.0.2",
         "@0x/tslint-config": "^3.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "@types/mocha": "^2.2.42",
         "copyfiles": "^2.0.0",
         "ethereum-types": "^2.0.0",
@@ -49,8 +50,8 @@
         "run-s": "^0.0.0"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/sol-compiler": "^3.0.0",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/sol-compiler": "^3.0.2",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/packages/migrations/CHANGELOG.json b/packages/migrations/CHANGELOG.json
index f651e9434..9d7c22b7c 100644
--- a/packages/migrations/CHANGELOG.json
+++ b/packages/migrations/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "3.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549504360,
+        "version": "3.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
diff --git a/packages/migrations/CHANGELOG.md b/packages/migrations/CHANGELOG.md
index 40add5c2c..b39732ef4 100644
--- a/packages/migrations/CHANGELOG.md
+++ b/packages/migrations/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v3.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v3.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v3.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/migrations/package.json b/packages/migrations/package.json
index 6ad48b3a6..91476d322 100644
--- a/packages/migrations/package.json
+++ b/packages/migrations/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/migrations",
-    "version": "3.0.0",
+    "version": "3.0.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -35,9 +35,9 @@
     },
     "license": "Apache-2.0",
     "devDependencies": {
-        "@0x/dev-utils": "^2.0.0",
+        "@0x/dev-utils": "^2.0.2",
         "@0x/tslint-config": "^3.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/types": "^2.0.2",
         "@types/yargs": "^11.0.0",
         "make-promises-safe": "^1.1.0",
         "npm-run-all": "^4.1.2",
@@ -48,16 +48,16 @@
         "yargs": "^10.0.3"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^3.0.0",
-        "@0x/base-contract": "^4.0.0",
+        "@0x/abi-gen-wrappers": "^3.0.2",
+        "@0x/base-contract": "^4.0.2",
         "@0x/contract-addresses": "^2.2.1",
         "@0x/contract-artifacts": "^1.3.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/sol-compiler": "^3.0.0",
-        "@0x/subproviders": "^3.0.0",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/sol-compiler": "^3.0.2",
+        "@0x/subproviders": "^3.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "@ledgerhq/hw-app-eth": "^4.3.0",
         "ethereum-types": "^2.0.0",
         "ethers": "~4.0.4",
diff --git a/packages/monorepo-scripts/package.json b/packages/monorepo-scripts/package.json
index dbe2d081c..3e9a972c2 100644
--- a/packages/monorepo-scripts/package.json
+++ b/packages/monorepo-scripts/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/monorepo-scripts",
-    "version": "1.0.20",
+    "version": "1.0.23",
     "engines": {
         "node": ">=6.12"
     },
@@ -47,7 +47,8 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/utils": "^4.0.1",
+        "@0x/types": "^2.0.2",
+        "@0x/utils": "^4.0.3",
         "@lerna/batch-packages": "^3.0.0-beta.18",
         "@types/depcheck": "^0.6.0",
         "async-child-process": "^1.1.1",
diff --git a/packages/monorepo-scripts/src/deps_versions.ts b/packages/monorepo-scripts/src/deps_versions.ts
index 0d01a2e3c..bb7e50f51 100644
--- a/packages/monorepo-scripts/src/deps_versions.ts
+++ b/packages/monorepo-scripts/src/deps_versions.ts
@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
+import { PackageJSON, PackageJSONConfig } from '@0x/types';
 import chalk from 'chalk';
-import * as fs from 'fs';
 import { sync as globSync } from 'glob';
 import * as path from 'path';
 
@@ -24,9 +24,10 @@ interface ParsedDependencies {
 
 const PACKAGE_JSON_GLOB = '../../*/package.json';
 
-const config = JSON.parse(fs.readFileSync(path.join(__dirname, '../../../package.json')).toString()).config;
-const dependenciesWithIgnoredVersions: string[] = config.ignoreDependencyVersions.split(' ');
-const packagesWithIgnoredVersions: string[] = config.ignoreDependencyVersionsForPackage.split(' ');
+const config = utils.readJSONFile<PackageJSON>(path.join(__dirname, '../../../package.json'))
+    .config as PackageJSONConfig; // tslint:disable-line no-unnecessary-type-assertion
+const dependenciesWithIgnoredVersions: string[] = (config.ignoreDependencyVersions as string).split(' ');
+const packagesWithIgnoredVersions: string[] = (config.ignoreDependencyVersionsForPackage as string).split(' ');
 
 if (require.main === module) {
     const dependencies = parseDependencies();
@@ -44,11 +45,10 @@ if (require.main === module) {
 }
 
 function getDependencies(_path: string): Dependencies {
-    const file = fs.readFileSync(_path).toString();
-    const parsed = JSON.parse(file);
+    const packageJSON = utils.readJSONFile<PackageJSON>(_path);
     const dependencies = {
-        ...parsed.dependencies,
-        ...parsed.devDependencies,
+        ...packageJSON.dependencies,
+        ...packageJSON.devDependencies,
     };
     return dependencies;
 }
diff --git a/packages/monorepo-scripts/src/publish.ts b/packages/monorepo-scripts/src/publish.ts
index 105d87dcd..ddb2811f2 100644
--- a/packages/monorepo-scripts/src/publish.ts
+++ b/packages/monorepo-scripts/src/publish.ts
@@ -1,8 +1,8 @@
 #!/usr/bin/env node
 
+import { PackageJSON } from '@0x/types';
 import { logUtils } from '@0x/utils';
 import * as promisify from 'es6-promisify';
-import * as fs from 'fs';
 import * as _ from 'lodash';
 import * as moment from 'moment';
 import opn = require('opn');
@@ -141,8 +141,8 @@ async function publishImagesToDockerHubAsync(allUpdatedPackages: Package[]): Pro
 
 function getPackagesWithDocs(allUpdatedPackages: Package[]): Package[] {
     const rootPackageJsonPath = `${constants.monorepoRootPath}/package.json`;
-    const rootPackageJson = JSON.parse(fs.readFileSync(rootPackageJsonPath).toString());
-    const packagesWithDocPagesStringIfExist = _.get(rootPackageJson, 'config.packagesWithDocPages', undefined);
+    const rootPackageJSON = utils.readJSONFile<PackageJSON>(rootPackageJsonPath);
+    const packagesWithDocPagesStringIfExist = _.get(rootPackageJSON, 'config.packagesWithDocPages', undefined);
     if (_.isUndefined(packagesWithDocPagesStringIfExist)) {
         return []; // None to generate & publish
     }
diff --git a/packages/monorepo-scripts/src/test_installation.ts b/packages/monorepo-scripts/src/test_installation.ts
index 822f48967..ec145cd32 100644
--- a/packages/monorepo-scripts/src/test_installation.ts
+++ b/packages/monorepo-scripts/src/test_installation.ts
@@ -8,7 +8,7 @@ import { exec as execAsync } from 'promisify-child-process';
 import * as rimraf from 'rimraf';
 import { promisify } from 'util';
 
-import { Package } from './types';
+import { Changelog, Package } from './types';
 import { utils } from './utils/utils';
 
 // Packages might not be runnable if they are command-line tools or only run in browsers.
@@ -100,7 +100,7 @@ async function testInstallPackageAsync(
     installablePackage: Package,
 ): Promise<void> {
     const changelogPath = path.join(installablePackage.location, 'CHANGELOG.json');
-    const lastChangelogVersion = JSON.parse(fs.readFileSync(changelogPath).toString())[0].version;
+    const lastChangelogVersion = utils.readJSONFile<Changelog>(changelogPath)[0].version;
     const packageName = installablePackage.packageJson.name;
     utils.log(`Testing ${packageName}@${lastChangelogVersion}`);
     const packageDirName = path.join(...`${packageName}-test`.split('/'));
diff --git a/packages/monorepo-scripts/src/types.ts b/packages/monorepo-scripts/src/types.ts
index 4af4fd257..e285d9082 100644
--- a/packages/monorepo-scripts/src/types.ts
+++ b/packages/monorepo-scripts/src/types.ts
@@ -1,3 +1,5 @@
+import { PackageJSON } from '@0x/types';
+
 export interface UpdatedPackage {
     name: string;
     version: string;
@@ -34,21 +36,6 @@ export interface GitTagsByPackageName {
     [packageName: string]: string[];
 }
 
-export interface PackageJSON {
-    private?: boolean;
-    version: string;
-    name: string;
-    main?: string;
-    scripts?: { [command: string]: string };
-    config?: {
-        postpublish?: {
-            assets?: string[];
-            docOmitExports?: string[];
-            dockerHubRepo?: string;
-        };
-    };
-}
-
 export interface Package {
     location: string;
     packageJson: PackageJSON;
diff --git a/packages/monorepo-scripts/src/utils/doc_generate_and_upload_utils.ts b/packages/monorepo-scripts/src/utils/doc_generate_and_upload_utils.ts
index 1a4294e9c..c0e86ad44 100644
--- a/packages/monorepo-scripts/src/utils/doc_generate_and_upload_utils.ts
+++ b/packages/monorepo-scripts/src/utils/doc_generate_and_upload_utils.ts
@@ -1,3 +1,4 @@
+import { PackageJSON } from '@0x/types';
 import { existsSync, readFileSync, writeFileSync } from 'fs';
 import * as _ from 'lodash';
 import * as path from 'path';
@@ -6,7 +7,7 @@ import * as ts from 'typescript';
 
 import { constants } from '../constants';
 import { docGenConfigs } from '../doc_gen_configs';
-import { ExportInfo, ExportNameToTypedocNames, ExportPathToExportedItems, PackageJSON } from '../types';
+import { ExportInfo, ExportNameToTypedocNames, ExportPathToExportedItems } from '../types';
 
 import { utils } from './utils';
 
diff --git a/packages/monorepo-scripts/src/utils/utils.ts b/packages/monorepo-scripts/src/utils/utils.ts
index 28c5658f3..20a6932c3 100644
--- a/packages/monorepo-scripts/src/utils/utils.ts
+++ b/packages/monorepo-scripts/src/utils/utils.ts
@@ -1,3 +1,4 @@
+import { PackageJSON } from '@0x/types';
 import batchPackages = require('@lerna/batch-packages');
 import * as fs from 'fs';
 import * as _ from 'lodash';
@@ -5,7 +6,7 @@ import { exec as execAsync } from 'promisify-child-process';
 import semver = require('semver');
 
 import { constants } from '../constants';
-import { GitTagsByPackageName, Package, PackageJSON, UpdatedPackage } from '../types';
+import { GitTagsByPackageName, Package, UpdatedPackage } from '../types';
 
 import { changelogUtils } from './changelog_utils';
 
@@ -13,6 +14,11 @@ export const utils = {
     log(...args: any[]): void {
         console.log(...args); // tslint:disable-line:no-console
     },
+    readJSONFile<T>(path: string): T {
+        const JSONString = fs.readFileSync(path, 'utf8');
+        const parsed: T = JSON.parse(JSONString);
+        return parsed;
+    },
     getTopologicallySortedPackages(rootDir: string): Package[] {
         const packages = utils.getPackages(rootDir);
         const batchedPackages: PackageJSON[] = _.flatten(batchPackages(_.map(packages, pkg => pkg.packageJson), false));
@@ -23,8 +29,7 @@ export const utils = {
         return topsortedPackages;
     },
     getPackages(rootDir: string): Package[] {
-        const rootPackageJsonString = fs.readFileSync(`${rootDir}/package.json`, 'utf8');
-        const rootPackageJson = JSON.parse(rootPackageJsonString);
+        const rootPackageJson = utils.readJSONFile<PackageJSON>(`${rootDir}/package.json`);
         if (_.isUndefined(rootPackageJson.workspaces)) {
             throw new Error(`Did not find 'workspaces' key in root package.json`);
         }
@@ -40,8 +45,7 @@ export const utils = {
                 }
                 const pathToPackageJson = `${rootDir}/${workspacePath}${subpackageName}`;
                 try {
-                    const packageJsonString = fs.readFileSync(`${pathToPackageJson}/package.json`, 'utf8');
-                    const packageJson = JSON.parse(packageJsonString);
+                    const packageJson = utils.readJSONFile<PackageJSON>(`${pathToPackageJson}/package.json`);
                     const pkg = {
                         location: pathToPackageJson,
                         packageJson,
diff --git a/packages/order-utils/CHANGELOG.json b/packages/order-utils/CHANGELOG.json
index 5169208c9..0028ea0c7 100644
--- a/packages/order-utils/CHANGELOG.json
+++ b/packages/order-utils/CHANGELOG.json
@@ -1,5 +1,39 @@
 [
     {
+        "version": "6.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "version": "6.0.0",
+        "changes": {
+            "note": "Stop exporting the EIP712 schemas"
+        },
+        "timestamp": 1549504360
+    },
+    {
+        "version": "5.0.0",
+        "changes": [
+            {
+                "note": "Add `transactionHashUtils`",
+                "pr": 1576
+            },
+            {
+                "note": "Refactor `eip712Utils` to allow custom domain params",
+                "pr": 1576
+            },
+            {
+                "note": "Export constant EIP712 params",
+                "pr": 1576
+            }
+        ],
+        "timestamp": 1549452781
+    },
+    {
         "version": "4.0.0",
         "changes": [
             {
diff --git a/packages/order-utils/CHANGELOG.md b/packages/order-utils/CHANGELOG.md
index dd5a7c58f..06e6a2839 100644
--- a/packages/order-utils/CHANGELOG.md
+++ b/packages/order-utils/CHANGELOG.md
@@ -5,9 +5,24 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v6.0.1 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v6.0.0 - _February 7, 2019_
+
+    * undefined
+
+## v5.0.0 - _February 6, 2019_
+
+    * Add `transactionHashUtils` (#1576)
+    * Refactor `eip712Utils` to allow custom domain params (#1576)
+    * Export constant EIP712 params (#1576)
+
 ## v4.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
+    * Fix preSigned `isSignatureValidAsync` check (#1580)
 
 ## v3.1.2 - _January 15, 2019_
 
diff --git a/packages/order-utils/package.json b/packages/order-utils/package.json
index 8645581ab..e2d0bcc98 100644
--- a/packages/order-utils/package.json
+++ b/packages/order-utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/order-utils",
-    "version": "4.0.0",
+    "version": "6.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -35,7 +35,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/order-utils/README.md",
     "devDependencies": {
-        "@0x/dev-utils": "^2.0.0",
+        "@0x/dev-utils": "^2.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
@@ -53,16 +53,16 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^3.0.0",
-        "@0x/assert": "^2.0.0",
-        "@0x/base-contract": "^4.0.0",
-        "@0x/contract-artifacts": "^1.3.0",
+        "@0x/abi-gen-wrappers": "^3.0.2",
+        "@0x/assert": "^2.0.2",
+        "@0x/base-contract": "^4.0.2",
         "@0x/contract-addresses": "^2.2.1",
-        "@0x/json-schemas": "^3.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/contract-artifacts": "^1.3.0",
+        "@0x/json-schemas": "^3.0.2",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "@types/node": "*",
         "bn.js": "^4.11.8",
         "ethereum-types": "^2.0.0",
diff --git a/packages/order-utils/src/constants.ts b/packages/order-utils/src/constants.ts
index a9a687719..3c93575b3 100644
--- a/packages/order-utils/src/constants.ts
+++ b/packages/order-utils/src/constants.ts
@@ -68,9 +68,9 @@ export const constants = {
     SELECTOR_CHAR_LENGTH_WITH_PREFIX: 10,
     INFINITE_TIMESTAMP_SEC: new BigNumber(2524604400), // Close to infinite
     ZERO_AMOUNT: new BigNumber(0),
-    EIP712_DOMAIN_NAME: '0x Protocol',
-    EIP712_DOMAIN_VERSION: '2',
-    EIP712_DOMAIN_SCHEMA: {
+    EXCHANGE_DOMAIN_NAME: '0x Protocol',
+    EXCHANGE_DOMAIN_VERSION: '2',
+    DEFAULT_DOMAIN_SCHEMA: {
         name: 'EIP712Domain',
         parameters: [
             { name: 'name', type: 'string' },
@@ -78,7 +78,7 @@ export const constants = {
             { name: 'verifyingContract', type: 'address' },
         ],
     },
-    EIP712_ORDER_SCHEMA: {
+    EXCHANGE_ORDER_SCHEMA: {
         name: 'Order',
         parameters: [
             { name: 'makerAddress', type: 'address' },
@@ -95,7 +95,7 @@ export const constants = {
             { name: 'takerAssetData', type: 'bytes' },
         ],
     },
-    EIP712_ZEROEX_TRANSACTION_SCHEMA: {
+    EXCHANGE_ZEROEX_TRANSACTION_SCHEMA: {
         name: 'ZeroExTransaction',
         parameters: [
             { name: 'salt', type: 'uint256' },
diff --git a/packages/order-utils/src/eip712_utils.ts b/packages/order-utils/src/eip712_utils.ts
index 385fda989..685fdc8c8 100644
--- a/packages/order-utils/src/eip712_utils.ts
+++ b/packages/order-utils/src/eip712_utils.ts
@@ -1,6 +1,13 @@
 import { assert } from '@0x/assert';
 import { schemas } from '@0x/json-schemas';
-import { EIP712Object, EIP712TypedData, EIP712Types, Order, ZeroExTransaction } from '@0x/types';
+import {
+    EIP712DomainWithDefaultSchema,
+    EIP712Object,
+    EIP712TypedData,
+    EIP712Types,
+    Order,
+    ZeroExTransaction,
+} from '@0x/types';
 import * as _ from 'lodash';
 
 import { constants } from './constants';
@@ -11,26 +18,26 @@ export const eip712Utils = {
      * @param   primaryType The primary type found in message
      * @param   types The additional types for the data in message
      * @param   message The contents of the message
-     * @param   exchangeAddress The address of the exchange contract
+     * @param   domain Domain containing a name (optional), version (optional), and verifying contract address
      * @return  A typed data object
      */
     createTypedData: (
         primaryType: string,
         types: EIP712Types,
         message: EIP712Object,
-        exchangeAddress: string,
+        domain: EIP712DomainWithDefaultSchema,
     ): EIP712TypedData => {
-        assert.isETHAddressHex('exchangeAddress', exchangeAddress);
+        assert.isETHAddressHex('verifyingContractAddress', domain.verifyingContractAddress);
         assert.isString('primaryType', primaryType);
         const typedData = {
             types: {
-                EIP712Domain: constants.EIP712_DOMAIN_SCHEMA.parameters,
+                EIP712Domain: constants.DEFAULT_DOMAIN_SCHEMA.parameters,
                 ...types,
             },
             domain: {
-                name: constants.EIP712_DOMAIN_NAME,
-                version: constants.EIP712_DOMAIN_VERSION,
-                verifyingContract: exchangeAddress,
+                name: _.isUndefined(domain.name) ? constants.EXCHANGE_DOMAIN_NAME : domain.name,
+                version: _.isUndefined(domain.version) ? constants.EXCHANGE_DOMAIN_VERSION : domain.version,
+                verifyingContract: domain.verifyingContractAddress,
             },
             message,
             primaryType,
@@ -48,11 +55,14 @@ export const eip712Utils = {
         const normalizedOrder = _.mapValues(order, value => {
             return !_.isString(value) ? value.toString() : value;
         });
+        const domain = {
+            verifyingContractAddress: order.exchangeAddress,
+        };
         const typedData = eip712Utils.createTypedData(
-            constants.EIP712_ORDER_SCHEMA.name,
-            { Order: constants.EIP712_ORDER_SCHEMA.parameters },
+            constants.EXCHANGE_ORDER_SCHEMA.name,
+            { Order: constants.EXCHANGE_ORDER_SCHEMA.parameters },
             normalizedOrder,
-            order.exchangeAddress,
+            domain,
         );
         return typedData;
     },
@@ -60,23 +70,22 @@ export const eip712Utils = {
      * Creates an ExecuteTransaction EIP712TypedData object for use with signTypedData and
      * 0x Exchange executeTransaction.
      * @param   ZeroExTransaction the 0x transaction
-     * @param   exchangeAddress The address of the exchange contract
      * @return  A typed data object
      */
-    createZeroExTransactionTypedData: (
-        zeroExTransaction: ZeroExTransaction,
-        exchangeAddress: string,
-    ): EIP712TypedData => {
-        assert.isETHAddressHex('exchangeAddress', exchangeAddress);
+    createZeroExTransactionTypedData: (zeroExTransaction: ZeroExTransaction): EIP712TypedData => {
+        assert.isETHAddressHex('verifyingContractAddress', zeroExTransaction.verifyingContractAddress);
         assert.doesConformToSchema('zeroExTransaction', zeroExTransaction, schemas.zeroExTransactionSchema);
         const normalizedTransaction = _.mapValues(zeroExTransaction, value => {
             return !_.isString(value) ? value.toString() : value;
         });
+        const domain = {
+            verifyingContractAddress: zeroExTransaction.verifyingContractAddress,
+        };
         const typedData = eip712Utils.createTypedData(
-            constants.EIP712_ZEROEX_TRANSACTION_SCHEMA.name,
-            { ZeroExTransaction: constants.EIP712_ZEROEX_TRANSACTION_SCHEMA.parameters },
+            constants.EXCHANGE_ZEROEX_TRANSACTION_SCHEMA.name,
+            { ZeroExTransaction: constants.EXCHANGE_ZEROEX_TRANSACTION_SCHEMA.parameters },
             normalizedTransaction,
-            exchangeAddress,
+            domain,
         );
         return typedData;
     },
diff --git a/packages/order-utils/src/index.ts b/packages/order-utils/src/index.ts
index 2150a02e4..ff37d7088 100644
--- a/packages/order-utils/src/index.ts
+++ b/packages/order-utils/src/index.ts
@@ -3,6 +3,7 @@ export { signatureUtils } from './signature_utils';
 export { generatePseudoRandomSalt } from './salt';
 export { assetDataUtils } from './asset_data_utils';
 export { marketUtils } from './market_utils';
+export { transactionHashUtils } from './transaction_hash';
 export { rateUtils } from './rate_utils';
 export { sortingUtils } from './sorting_utils';
 export { orderParsingUtils } from './parsing_utils';
@@ -50,7 +51,9 @@ export {
     EIP712Types,
     EIP712Object,
     EIP712ObjectValue,
+    EIP712DomainWithDefaultSchema,
     ZeroExTransaction,
+    SignedZeroExTransaction,
 } from '@0x/types';
 export {
     OrderError,
diff --git a/packages/order-utils/src/order_hash.ts b/packages/order-utils/src/order_hash.ts
index c8e9be71e..ce7e6d85f 100644
--- a/packages/order-utils/src/order_hash.ts
+++ b/packages/order-utils/src/order_hash.ts
@@ -4,6 +4,7 @@ import { signTypedDataUtils } from '@0x/utils';
 import * as _ from 'lodash';
 
 import { assert } from './assert';
+import { constants } from './constants';
 import { eip712Utils } from './eip712_utils';
 
 const INVALID_TAKER_FORMAT = 'instance.takerAddress is not of a type(s) string';
@@ -34,8 +35,9 @@ export const orderHashUtils = {
             assert.doesConformToSchema('order', order, schemas.orderSchema, [schemas.hexSchema]);
         } catch (error) {
             if (_.includes(error.message, INVALID_TAKER_FORMAT)) {
-                const errMsg =
-                    'Order taker must be of type string. If you want anyone to be able to fill an order - pass ZeroEx.NULL_ADDRESS';
+                const errMsg = `Order taker must be of type string. If you want anyone to be able to fill an order - pass ${
+                    constants.NULL_ADDRESS
+                }`;
                 throw new Error(errMsg);
             }
             throw error;
@@ -51,6 +53,17 @@ export const orderHashUtils = {
      * @return  A Buffer containing the resulting orderHash from hashing the supplied order
      */
     getOrderHashBuffer(order: SignedOrder | Order): Buffer {
+        try {
+            assert.doesConformToSchema('order', order, schemas.orderSchema, [schemas.hexSchema]);
+        } catch (error) {
+            if (_.includes(error.message, INVALID_TAKER_FORMAT)) {
+                const errMsg = `Order taker must be of type string. If you want anyone to be able to fill an order - pass ${
+                    constants.NULL_ADDRESS
+                }`;
+                throw new Error(errMsg);
+            }
+            throw error;
+        }
         const typedData = eip712Utils.createOrderTypedData(order);
         const orderHashBuff = signTypedDataUtils.generateTypedDataHash(typedData);
         return orderHashBuff;
diff --git a/packages/order-utils/src/transaction_hash.ts b/packages/order-utils/src/transaction_hash.ts
new file mode 100644
index 000000000..2b2345af7
--- /dev/null
+++ b/packages/order-utils/src/transaction_hash.ts
@@ -0,0 +1,46 @@
+import { schemas, SchemaValidator } from '@0x/json-schemas';
+import { SignedZeroExTransaction, ZeroExTransaction } from '@0x/types';
+import { signTypedDataUtils } from '@0x/utils';
+import * as _ from 'lodash';
+
+import { assert } from './assert';
+import { eip712Utils } from './eip712_utils';
+
+export const transactionHashUtils = {
+    /**
+     * Checks if the supplied hex encoded 0x transaction hash is valid.
+     * Note: Valid means it has the expected format, not that a transaction with the transactionHash exists.
+     * Use this method when processing transactionHashes submitted as user input.
+     * @param   transactionHash    Hex encoded transactionHash.
+     * @return  Whether the supplied transactionHash has the expected format.
+     */
+    isValidTransactionHash(transactionHash: string): boolean {
+        // Since this method can be called to check if any arbitrary string conforms to an transactionHash's
+        // format, we only assert that we were indeed passed a string.
+        assert.isString('transactionHash', transactionHash);
+        const schemaValidator = new SchemaValidator();
+        const isValid = schemaValidator.validate(transactionHash, schemas.orderHashSchema).valid;
+        return isValid;
+    },
+    /**
+     * Computes the transactionHash for a supplied 0x transaction.
+     * @param   transaction   An object that conforms to the ZeroExTransaction or SignedZeroExTransaction interface definitions.
+     * @return  Hex encoded string transactionHash from hashing the supplied order.
+     */
+    getTransactionHashHex(transaction: ZeroExTransaction | SignedZeroExTransaction): string {
+        assert.doesConformToSchema('transaction', transaction, schemas.zeroExTransactionSchema, [schemas.hexSchema]);
+        const transactionHashBuff = transactionHashUtils.getTransactionHashBuffer(transaction);
+        const transactionHashHex = `0x${transactionHashBuff.toString('hex')}`;
+        return transactionHashHex;
+    },
+    /**
+     * Computes the transactionHash for a supplied 0x transaction.
+     * @param   transaction   An object that conforms to the ZeroExTransaction or SignedZeroExTransaction interface definitions.
+     * @return  A Buffer containing the resulting transactionHash from hashing the supplied 0x transaction.
+     */
+    getTransactionHashBuffer(transaction: ZeroExTransaction | SignedZeroExTransaction): Buffer {
+        const typedData = eip712Utils.createZeroExTransactionTypedData(transaction);
+        const transactionHashBuff = signTypedDataUtils.generateTypedDataHash(typedData);
+        return transactionHashBuff;
+    },
+};
diff --git a/packages/order-utils/test/eip712_utils_test.ts b/packages/order-utils/test/eip712_utils_test.ts
index a54e49958..c97bed144 100644
--- a/packages/order-utils/test/eip712_utils_test.ts
+++ b/packages/order-utils/test/eip712_utils_test.ts
@@ -12,33 +12,55 @@ const expect = chai.expect;
 
 describe('EIP712 Utils', () => {
     describe('createTypedData', () => {
-        it('adds in the EIP712DomainSeparator', () => {
+        it('adds in the EIP712DomainSeparator with default values', () => {
             const primaryType = 'Test';
             const typedData = eip712Utils.createTypedData(
                 primaryType,
                 { Test: [{ name: 'testValue', type: 'uint256' }] },
                 { testValue: '1' },
-                constants.NULL_ADDRESS,
+                { verifyingContractAddress: constants.NULL_ADDRESS },
             );
             expect(typedData.domain).to.not.be.undefined();
             expect(typedData.types.EIP712Domain).to.not.be.undefined();
             const domainObject = typedData.domain;
-            expect(domainObject.name).to.eq(constants.EIP712_DOMAIN_NAME);
+            expect(domainObject.name).to.eq(constants.EXCHANGE_DOMAIN_NAME);
+            expect(domainObject.version).to.eq(constants.EXCHANGE_DOMAIN_VERSION);
+            expect(domainObject.verifyingContract).to.eq(constants.NULL_ADDRESS);
+            expect(typedData.primaryType).to.eq(primaryType);
+        });
+        it('adds in the EIP712DomainSeparator without default values', () => {
+            const primaryType = 'Test';
+            const domainName = 'testDomain';
+            const domainVersion = 'testVersion';
+            const typedData = eip712Utils.createTypedData(
+                primaryType,
+                { Test: [{ name: 'testValue', type: 'uint256' }] },
+                { testValue: '1' },
+                { name: domainName, version: domainVersion, verifyingContractAddress: constants.NULL_ADDRESS },
+            );
+            expect(typedData.domain).to.not.be.undefined();
+            expect(typedData.types.EIP712Domain).to.not.be.undefined();
+            const domainObject = typedData.domain;
+            expect(domainObject.name).to.eq(domainName);
+            expect(domainObject.version).to.eq(domainVersion);
+            expect(domainObject.verifyingContract).to.eq(constants.NULL_ADDRESS);
             expect(typedData.primaryType).to.eq(primaryType);
         });
     });
-    describe('createTypedData', () => {
+    describe('createZeroExTransactionTypedData', () => {
         it('adds in the EIP712DomainSeparator', () => {
-            const typedData = eip712Utils.createZeroExTransactionTypedData(
-                {
-                    salt: new BigNumber('0'),
-                    data: constants.NULL_BYTES,
-                    signerAddress: constants.NULL_ADDRESS,
-                },
-                constants.NULL_ADDRESS,
-            );
-            expect(typedData.primaryType).to.eq(constants.EIP712_ZEROEX_TRANSACTION_SCHEMA.name);
+            const typedData = eip712Utils.createZeroExTransactionTypedData({
+                salt: new BigNumber('0'),
+                data: constants.NULL_BYTES,
+                signerAddress: constants.NULL_ADDRESS,
+                verifyingContractAddress: constants.NULL_ADDRESS,
+            });
+            expect(typedData.primaryType).to.eq(constants.EXCHANGE_ZEROEX_TRANSACTION_SCHEMA.name);
             expect(typedData.types.EIP712Domain).to.not.be.undefined();
+            const domainObject = typedData.domain;
+            expect(domainObject.name).to.eq(constants.EXCHANGE_DOMAIN_NAME);
+            expect(domainObject.version).to.eq(constants.EXCHANGE_DOMAIN_VERSION);
+            expect(domainObject.verifyingContract).to.eq(constants.NULL_ADDRESS);
         });
     });
 });
diff --git a/packages/order-utils/test/order_hash_test.ts b/packages/order-utils/test/order_hash_test.ts
index 30fb15a37..514fc2709 100644
--- a/packages/order-utils/test/order_hash_test.ts
+++ b/packages/order-utils/test/order_hash_test.ts
@@ -54,8 +54,9 @@ describe('Order hashing', () => {
                 ...order,
                 takerAddress: (null as any) as string,
             };
-            const expectedErrorMessage =
-                'Order taker must be of type string. If you want anyone to be able to fill an order - pass ZeroEx.NULL_ADDRESS';
+            const expectedErrorMessage = `Order taker must be of type string. If you want anyone to be able to fill an order - pass ${
+                constants.NULL_ADDRESS
+            }`;
             expect(() => orderHashUtils.getOrderHashHex(orderWithInvalidtakerFormat)).to.throw(expectedErrorMessage);
         });
     });
diff --git a/packages/order-utils/test/transaction_hash_test.ts b/packages/order-utils/test/transaction_hash_test.ts
new file mode 100644
index 000000000..c7ca33a64
--- /dev/null
+++ b/packages/order-utils/test/transaction_hash_test.ts
@@ -0,0 +1,56 @@
+import { ZeroExTransaction } from '@0x/types';
+import { BigNumber } from '@0x/utils';
+import * as chai from 'chai';
+import 'mocha';
+
+import { transactionHashUtils } from '../src';
+
+import { constants } from '../src/constants';
+
+import { chaiSetup } from './utils/chai_setup';
+
+chaiSetup.configure();
+const expect = chai.expect;
+
+describe('0x transaction hashing', () => {
+    describe('#getTransactionHashHex', () => {
+        const expectedTransactionHash = '0x82c9bb2dcac4f868ec7a15c20ff6175cfc384c20ae6a872aa0342a840f108c2b';
+        const fakeVerifyingContractAddress = '0x5e72914535f202659083db3a02c984188fa26e9f';
+        const transaction: ZeroExTransaction = {
+            verifyingContractAddress: fakeVerifyingContractAddress,
+            signerAddress: constants.NULL_ADDRESS,
+            salt: new BigNumber(0),
+            data: constants.NULL_BYTES,
+        };
+        it('calculates the transaction hash', async () => {
+            const transactionHash = transactionHashUtils.getTransactionHashHex(transaction);
+            expect(transactionHash).to.be.equal(expectedTransactionHash);
+        });
+        it('calculates the transaction hash if amounts are strings', async () => {
+            // It's common for developers using javascript to provide the amounts
+            // as strings. Since we eventually toString() the BigNumber
+            // before encoding we should result in the same orderHash in this scenario
+            // tslint:disable-next-line:no-unnecessary-type-assertion
+            const transactionHash = transactionHashUtils.getTransactionHashHex({
+                ...transaction,
+                salt: '0',
+            } as any);
+            expect(transactionHash).to.be.equal(expectedTransactionHash);
+        });
+    });
+    describe('#isValidTransactionHash', () => {
+        it('returns false if the value is not a hex string', () => {
+            const isValid = transactionHashUtils.isValidTransactionHash('not a hex');
+            expect(isValid).to.be.false();
+        });
+        it('returns false if the length is wrong', () => {
+            const isValid = transactionHashUtils.isValidTransactionHash('0xdeadbeef');
+            expect(isValid).to.be.false();
+        });
+        it('returns true if order hash is correct', () => {
+            const orderHashLength = 65;
+            const isValid = transactionHashUtils.isValidTransactionHash(`0x${Array(orderHashLength).join('0')}`);
+            expect(isValid).to.be.true();
+        });
+    });
+});
diff --git a/packages/order-watcher/CHANGELOG.json b/packages/order-watcher/CHANGELOG.json
index f6d9a6aad..69bcc8d03 100644
--- a/packages/order-watcher/CHANGELOG.json
+++ b/packages/order-watcher/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "3.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549504360,
+        "version": "3.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
diff --git a/packages/order-watcher/CHANGELOG.md b/packages/order-watcher/CHANGELOG.md
index 55b344b6a..7a3ede421 100644
--- a/packages/order-watcher/CHANGELOG.md
+++ b/packages/order-watcher/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v3.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v3.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v3.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/order-watcher/package.json b/packages/order-watcher/package.json
index 472b59bbd..209c9bdc5 100644
--- a/packages/order-watcher/package.json
+++ b/packages/order-watcher/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/order-watcher",
-    "version": "3.0.0",
+    "version": "3.0.3",
     "description": "An order watcher daemon that watches for order validity",
     "keywords": [
         "0x",
@@ -38,9 +38,9 @@
         "node": ">=6.0.0"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/migrations": "^3.0.0",
-        "@0x/subproviders": "^3.0.0",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/migrations": "^3.0.3",
+        "@0x/subproviders": "^3.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/bintrees": "^1.0.2",
         "@types/lodash": "4.14.104",
@@ -63,19 +63,19 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^3.0.0",
-        "@0x/assert": "^2.0.0",
-        "@0x/base-contract": "^4.0.0",
+        "@0x/abi-gen-wrappers": "^3.0.2",
+        "@0x/assert": "^2.0.2",
+        "@0x/base-contract": "^4.0.2",
         "@0x/contract-addresses": "^2.2.1",
         "@0x/contract-artifacts": "^1.3.0",
-        "@0x/contract-wrappers": "^6.0.1",
-        "@0x/fill-scenarios": "^2.0.0",
-        "@0x/json-schemas": "^3.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/contract-wrappers": "^7.0.2",
+        "@0x/fill-scenarios": "^2.0.3",
+        "@0x/json-schemas": "^3.0.2",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "bintrees": "^1.0.2",
         "ethereum-types": "^2.0.0",
         "ethereumjs-blockstream": "6.0.0",
diff --git a/packages/pipeline/package.json b/packages/pipeline/package.json
index e1292c0df..b2ad39a5f 100644
--- a/packages/pipeline/package.json
+++ b/packages/pipeline/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/pipeline",
-    "version": "1.0.6",
+    "version": "1.0.9",
     "private": true,
     "description": "Data pipeline for offline analysis",
     "scripts": {
@@ -39,16 +39,16 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/connect": "^4.0.0",
+        "@0x/connect": "^4.0.3",
         "@0x/contract-addresses": "^2.2.1",
         "@0x/contract-artifacts": "^1.3.0",
-        "@0x/contract-wrappers": "^6.0.1",
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/subproviders": "^3.0.0",
-        "@0x/types": "^2.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/contract-wrappers": "^7.0.2",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/subproviders": "^3.0.2",
+        "@0x/types": "^2.0.2",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "@types/dockerode": "^2.5.9",
         "@types/p-limit": "^2.0.0",
         "async-parallel": "^1.2.3",
@@ -57,7 +57,7 @@
         "dockerode": "^2.5.7",
         "ethereum-types": "^2.0.0",
         "pg": "^7.5.0",
-        "prettier": "^1.15.3",
+        "prettier": "^1.16.3",
         "ramda": "^0.25.0",
         "reflect-metadata": "^0.1.12",
         "sqlite3": "^4.0.2",
diff --git a/packages/react-docs/CHANGELOG.json b/packages/react-docs/CHANGELOG.json
index 91c60fa9a..82e162272 100644
--- a/packages/react-docs/CHANGELOG.json
+++ b/packages/react-docs/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "2.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549504360,
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/packages/react-docs/CHANGELOG.md b/packages/react-docs/CHANGELOG.md
index 4867a663a..fa8f387c2 100644
--- a/packages/react-docs/CHANGELOG.md
+++ b/packages/react-docs/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/react-docs/package.json b/packages/react-docs/package.json
index d9c354e25..5a91220e0 100644
--- a/packages/react-docs/package.json
+++ b/packages/react-docs/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/react-docs",
-    "version": "2.0.0",
+    "version": "2.0.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -24,7 +24,7 @@
         "url": "https://github.com/0xProject/0x-monorepo.git"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^2.0.0",
+        "@0x/dev-utils": "^2.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/compare-versions": "^3.0.0",
         "@types/styled-components": "4.0.0",
@@ -34,9 +34,9 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/react-shared": "^2.0.0",
-        "@0x/types": "^2.0.0",
-        "@0x/utils": "^4.0.1",
+        "@0x/react-shared": "^2.0.3",
+        "@0x/types": "^2.0.2",
+        "@0x/utils": "^4.0.3",
         "@types/lodash": "4.14.104",
         "@types/material-ui": "^0.20.0",
         "@types/node": "*",
diff --git a/packages/react-shared/CHANGELOG.json b/packages/react-shared/CHANGELOG.json
index ce5182ca6..9a7284c2a 100644
--- a/packages/react-shared/CHANGELOG.json
+++ b/packages/react-shared/CHANGELOG.json
@@ -1,5 +1,32 @@
 [
     {
+        "version": "2.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549504360,
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/packages/react-shared/CHANGELOG.md b/packages/react-shared/CHANGELOG.md
index a5a09a9e0..e1de4a765 100644
--- a/packages/react-shared/CHANGELOG.md
+++ b/packages/react-shared/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/react-shared/package.json b/packages/react-shared/package.json
index 72d384382..d93eb1436 100644
--- a/packages/react-shared/package.json
+++ b/packages/react-shared/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/react-shared",
-    "version": "2.0.0",
+    "version": "2.0.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -25,7 +25,7 @@
         "url": "https://github.com/0xProject/0x-monorepo.git"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^2.0.0",
+        "@0x/dev-utils": "^2.0.2",
         "@0x/tslint-config": "^3.0.0",
         "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
@@ -33,7 +33,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/types": "^2.0.0",
+        "@0x/types": "^2.0.2",
         "@material-ui/core": "^3.0.1",
         "@types/is-mobile": "0.3.0",
         "@types/lodash": "4.14.104",
@@ -52,7 +52,7 @@
         "material-ui": "^0.20.0",
         "react": "^16.5.2",
         "react-dom": "^16.5.2",
-        "react-highlight": "0xproject/react-highlight",
+        "react-highlight": "0xproject/react-highlight#react-peer-deps",
         "react-markdown": "^3.2.2",
         "react-router-dom": "^4.3.1",
         "react-scroll": "0xproject/react-scroll#pr-330-and-replace-state",
diff --git a/packages/react-shared/src/components/markdown_paragraph_block.tsx b/packages/react-shared/src/components/markdown_paragraph_block.tsx
index eeaef8571..9ed44ed07 100644
--- a/packages/react-shared/src/components/markdown_paragraph_block.tsx
+++ b/packages/react-shared/src/components/markdown_paragraph_block.tsx
@@ -6,5 +6,9 @@ import { colors } from '../utils/colors';
 export interface MarkdownParagraphBlockProps {}
 
 export const MarkdownParagraphBlock: React.StatelessComponent<MarkdownParagraphBlockProps> = ({ children }) => {
-    return <span style={{ color: colors.greyTheme, lineHeight: '26px' }}>{children}</span>;
+    return (
+        <span style={{ color: colors.greyTheme, lineHeight: '26px', display: 'block', paddingBottom: 15 }}>
+            {children}
+        </span>
+    );
 };
diff --git a/packages/sol-compiler/CHANGELOG.json b/packages/sol-compiler/CHANGELOG.json
index 021804ffa..ed9c45245 100644
--- a/packages/sol-compiler/CHANGELOG.json
+++ b/packages/sol-compiler/CHANGELOG.json
@@ -1,5 +1,36 @@
 [
     {
+        "version": "3.0.2",
+        "changes": [
+            {
+                "note": "Fix a bug when smart recompilation wasn't working because of remappings",
+                "pr": 1575
+            },
+            {
+                "note": "Fix a bug that made `opts` required instead of optional",
+                "pr": 1596
+            },
+            {
+                "note": "Remove `bin_paths` and fetch the list of Solidity compilers from Github",
+                "pr": 1596
+            },
+            {
+                "note": "Fix a bug causing `ast` and `legacyAST` to not be added to the artifacts even when requested",
+                "pr": 1596
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
diff --git a/packages/sol-compiler/CHANGELOG.md b/packages/sol-compiler/CHANGELOG.md
index 03a2b5b87..016509028 100644
--- a/packages/sol-compiler/CHANGELOG.md
+++ b/packages/sol-compiler/CHANGELOG.md
@@ -5,6 +5,17 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.2 - _February 7, 2019_
+
+    * Fix a bug when smart recompilation wasn't working because of remappings (#1575)
+    * Fix a bug that made `opts` required instead of optional (#1596)
+    * Remove `bin_paths` and fetch the list of Solidity compilers from Github (#1596)
+    * Fix a bug causing `ast` and `legacyAST` to not be added to the artifacts even when requested (#1596)
+
+## v3.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v3.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/sol-compiler/package.json b/packages/sol-compiler/package.json
index c16c6eb4a..3344c0b38 100644
--- a/packages/sol-compiler/package.json
+++ b/packages/sol-compiler/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-compiler",
-    "version": "3.0.0",
+    "version": "3.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -42,7 +42,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-compiler/README.md",
     "devDependencies": {
-        "@0x/dev-utils": "^2.0.0",
+        "@0x/dev-utils": "^2.0.2",
         "@0x/tslint-config": "^3.0.0",
         "@types/chokidar": "^1.7.5",
         "@types/mkdirp": "^0.5.2",
@@ -67,13 +67,13 @@
         "zeppelin-solidity": "1.8.0"
     },
     "dependencies": {
-        "@0x/assert": "^2.0.0",
-        "@0x/json-schemas": "^3.0.0",
-        "@0x/sol-resolver": "^2.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/assert": "^2.0.2",
+        "@0x/json-schemas": "^3.0.2",
+        "@0x/sol-resolver": "^2.0.2",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "@types/yargs": "^11.0.0",
         "chalk": "^2.3.0",
         "chokidar": "^2.0.4",
diff --git a/packages/sol-compiler/src/compiler.ts b/packages/sol-compiler/src/compiler.ts
index efee3eb8a..afa4cc5bb 100644
--- a/packages/sol-compiler/src/compiler.ts
+++ b/packages/sol-compiler/src/compiler.ts
@@ -21,7 +21,6 @@ import * as semver from 'semver';
 import solc = require('solc');
 
 import { compilerOptionsSchema } from './schemas/compiler_options_schema';
-import { binPaths } from './solc/bin_paths';
 import {
     addHexPrefixToContractBytecode,
     compileDockerAsync,
@@ -29,6 +28,7 @@ import {
     createDirIfDoesNotExistAsync,
     getContractArtifactIfExistsAsync,
     getDependencyNameToPackagePath,
+    getSolcJSReleasesAsync,
     getSourcesWithDependencies,
     getSourceTreeHash,
     makeContractPathsRelative,
@@ -96,12 +96,12 @@ export class Compiler {
      * @return An instance of the Compiler class.
      */
     constructor(opts?: CompilerOptions) {
-        assert.doesConformToSchema('opts', opts, compilerOptionsSchema);
+        const passedOpts = opts || {};
+        assert.doesConformToSchema('opts', passedOpts, compilerOptionsSchema);
         // TODO: Look for config file in parent directories if not found in current directory
         const config: CompilerOptions = fs.existsSync(CONFIG_FILE)
             ? JSON.parse(fs.readFileSync(CONFIG_FILE).toString())
             : {};
-        const passedOpts = opts || {};
         assert.doesConformToSchema('compiler.json', config, compilerOptionsSchema);
         this._contractsDir = path.resolve(passedOpts.contractsDir || config.contractsDir || DEFAULT_CONTRACTS_DIR);
         this._solcVersionIfExists = passedOpts.solcVersion || config.solcVersion;
@@ -195,9 +195,7 @@ export class Compiler {
                 path.basename(contractSource.path, constants.SOLIDITY_FILE_EXTENSION),
             );
         } else {
-            contractNamesToCompile = this._specifiedContracts.map(specifiedContract =>
-                path.basename(specifiedContract, constants.SOLIDITY_FILE_EXTENSION),
-            );
+            return this._specifiedContracts;
         }
         return contractNamesToCompile;
     }
@@ -213,16 +211,14 @@ export class Compiler {
         // map contract paths to data about them for later verification and persistence
         const contractPathToData: ContractPathToData = {};
 
+        const solcJSReleases = await getSolcJSReleasesAsync();
         const resolvedContractSources = [];
         for (const contractName of contractNames) {
             const spyResolver = new SpyResolver(this._resolver);
             const contractSource = spyResolver.resolve(contractName);
-            const sourceTreeHashHex = getSourceTreeHash(
-                spyResolver,
-                path.join(this._contractsDir, contractSource.path),
-            ).toString('hex');
+            const sourceTreeHashHex = getSourceTreeHash(spyResolver, contractSource.path).toString('hex');
             const contractData = {
-                contractName,
+                contractName: path.basename(contractName, constants.SOLIDITY_FILE_EXTENSION),
                 currentArtifactIfExists: await getContractArtifactIfExistsAsync(this._artifactsDir, contractName),
                 sourceTreeHashHex: `0x${sourceTreeHashHex}`,
             };
@@ -231,7 +227,7 @@ export class Compiler {
             }
             contractPathToData[contractSource.path] = contractData;
             const solcVersion = _.isUndefined(this._solcVersionIfExists)
-                ? semver.maxSatisfying(_.keys(binPaths), parseSolidityVersionRange(contractSource.source))
+                ? semver.maxSatisfying(_.keys(solcJSReleases), parseSolidityVersionRange(contractSource.source))
                 : this._solcVersionIfExists;
             const isFirstContractWithThisVersion = _.isUndefined(versionToInputs[solcVersion]);
             if (isFirstContractWithThisVersion) {
@@ -277,7 +273,7 @@ export class Compiler {
                 fullSolcVersion = versionCommandOutputParts[versionCommandOutputParts.length - 1].trim();
                 compilerOutput = await compileDockerAsync(solcVersion, input.standardInput);
             } else {
-                fullSolcVersion = binPaths[solcVersion];
+                fullSolcVersion = solcJSReleases[solcVersion];
                 compilerOutput = await compileSolcJSAsync(solcVersion, input.standardInput);
             }
             if (!_.isUndefined(compilerOutput.errors)) {
@@ -329,7 +325,10 @@ export class Compiler {
         } else {
             const currentArtifact = contractData.currentArtifactIfExists as ContractArtifact;
             const isUserOnLatestVersion = currentArtifact.schemaVersion === constants.LATEST_ARTIFACT_VERSION;
-            const didCompilerSettingsChange = !_.isEqual(currentArtifact.compiler.settings, this._compilerSettings);
+            const didCompilerSettingsChange = !_.isEqual(
+                _.omit(currentArtifact.compiler.settings, 'remappings'),
+                _.omit(this._compilerSettings, 'remappings'),
+            );
             const didSourceChange = currentArtifact.sourceTreeHashHex !== contractData.sourceTreeHashHex;
             return !isUserOnLatestVersion || didCompilerSettingsChange || didSourceChange;
         }
diff --git a/packages/sol-compiler/src/solc/bin_paths.ts b/packages/sol-compiler/src/solc/bin_paths.ts
deleted file mode 100644
index b653c0926..000000000
--- a/packages/sol-compiler/src/solc/bin_paths.ts
+++ /dev/null
@@ -1,52 +0,0 @@
-export interface BinaryPaths {
-    [key: string]: string;
-}
-
-export const binPaths: BinaryPaths = {
-    '0.5.2': 'soljson-v0.5.2+commit.1df8f40c.js',
-    '0.5.1': 'soljson-v0.5.1+commit.c8a2cb62.js',
-    '0.5.0': 'soljson-v0.5.0+commit.1d4f565a.js',
-    '0.4.25': 'soljson-v0.4.25+commit.59dbf8f1.js',
-    '0.4.24': 'soljson-v0.4.24+commit.e67f0147.js',
-    '0.4.23': 'soljson-v0.4.23+commit.124ca40d.js',
-    '0.4.22': 'soljson-v0.4.22+commit.4cb486ee.js',
-    '0.4.21': 'soljson-v0.4.21+commit.dfe3193c.js',
-    '0.4.20': 'soljson-v0.4.20+commit.3155dd80.js',
-    '0.4.19': 'soljson-v0.4.19+commit.c4cbbb05.js',
-    '0.4.18': 'soljson-v0.4.18+commit.9cf6e910.js',
-    '0.4.17': 'soljson-v0.4.17+commit.bdeb9e52.js',
-    '0.4.16': 'soljson-v0.4.16+commit.d7661dd9.js',
-    '0.4.15': 'soljson-v0.4.15+commit.bbb8e64f.js',
-    '0.4.14': 'soljson-v0.4.14+commit.c2215d46.js',
-    '0.4.13': 'soljson-v0.4.13+commit.fb4cb1a.js',
-    '0.4.12': 'soljson-v0.4.12+commit.194ff033.js',
-    '0.4.11': 'soljson-v0.4.11+commit.68ef5810.js',
-    '0.4.10': 'soljson-v0.4.10+commit.f0d539ae.js',
-    '0.4.9': 'soljson-v0.4.9+commit.364da425.js',
-    '0.4.8': 'soljson-v0.4.8+commit.60cc1668.js',
-    '0.4.7': 'soljson-v0.4.7+commit.822622cf.js',
-    '0.4.6': 'soljson-v0.4.6+commit.2dabbdf0.js',
-    '0.4.5': 'soljson-v0.4.5+commit.b318366e.js',
-    '0.4.4': 'soljson-v0.4.4+commit.4633f3de.js',
-    '0.4.3': 'soljson-v0.4.3+commit.2353da71.js',
-    '0.4.2': 'soljson-v0.4.2+commit.af6afb04.js',
-    '0.4.1': 'soljson-v0.4.1+commit.4fc6fc2c.js',
-    '0.4.0': 'soljson-v0.4.0+commit.acd334c9.js',
-    '0.3.6': 'soljson-v0.3.6+commit.3fc68da.js',
-    '0.3.5': 'soljson-v0.3.5+commit.5f97274.js',
-    '0.3.4': 'soljson-v0.3.4+commit.7dab890.js',
-    '0.3.3': 'soljson-v0.3.3+commit.4dc1cb1.js',
-    '0.3.2': 'soljson-v0.3.2+commit.81ae2a7.js',
-    '0.3.1': 'soljson-v0.3.1+commit.c492d9b.js',
-    '0.3.0': 'soljson-v0.3.0+commit.11d6736.js',
-    '0.2.2': 'soljson-v0.2.2+commit.ef92f56.js',
-    '0.2.1': 'soljson-v0.2.1+commit.91a6b35.js',
-    '0.2.0': 'soljson-v0.2.0+commit.4dc2445.js',
-    '0.1.7': 'soljson-v0.1.7+commit.b4e666c.js',
-    '0.1.6': 'soljson-v0.1.6+commit.d41f8b7.js',
-    '0.1.5': 'soljson-v0.1.5+commit.23865e3.js',
-    '0.1.4': 'soljson-v0.1.4+commit.5f6c3cd.js',
-    '0.1.3': 'soljson-v0.1.3+commit.28f561.js',
-    '0.1.2': 'soljson-v0.1.2+commit.d0d36e3.js',
-    '0.1.1': 'soljson-v0.1.1+commit.6ff4cd6.js',
-};
diff --git a/packages/sol-compiler/src/utils/compiler.ts b/packages/sol-compiler/src/utils/compiler.ts
index c75f76dac..28049e453 100644
--- a/packages/sol-compiler/src/utils/compiler.ts
+++ b/packages/sol-compiler/src/utils/compiler.ts
@@ -9,11 +9,9 @@ import * as path from 'path';
 import * as requireFromString from 'require-from-string';
 import * as solc from 'solc';
 
-import { binPaths } from '../solc/bin_paths';
-
 import { constants } from './constants';
 import { fsWrapper } from './fs_wrapper';
-import { CompilationError } from './types';
+import { BinaryPaths, CompilationError } from './types';
 
 /**
  * Gets contract data on network or returns if an artifact does not exist.
@@ -26,7 +24,10 @@ export async function getContractArtifactIfExistsAsync(
     contractName: string,
 ): Promise<ContractArtifact | void> {
     let contractArtifact;
-    const currentArtifactPath = `${artifactsDir}/${contractName}.json`;
+    const currentArtifactPath = `${artifactsDir}/${path.basename(
+        contractName,
+        constants.SOLIDITY_FILE_EXTENSION,
+    )}.json`;
     try {
         const opts = {
             encoding: 'utf8',
@@ -116,6 +117,20 @@ export function parseDependencies(contractSource: ContractSource): string[] {
     return dependencies;
 }
 
+let solcJSReleasesCache: BinaryPaths | undefined;
+
+/**
+ * Fetches the list of available solidity compilers
+ */
+export async function getSolcJSReleasesAsync(): Promise<BinaryPaths> {
+    if (_.isUndefined(solcJSReleasesCache)) {
+        const versionList = await fetch('https://ethereum.github.io/solc-bin/bin/list.json');
+        const versionListJSON = await versionList.json();
+        solcJSReleasesCache = versionListJSON.releases;
+    }
+    return solcJSReleasesCache as BinaryPaths;
+}
+
 /**
  * Compiles the contracts and prints errors/warnings
  * @param solcVersion Version of a solc compiler
@@ -236,7 +251,7 @@ export function getSourcesWithDependencies(
     contractPath: string,
     fullSources: { [sourceName: string]: { id: number } },
 ): { sourceCodes: { [sourceName: string]: string }; sources: { [sourceName: string]: { id: number } } } {
-    const sources = { [contractPath]: { id: fullSources[contractPath].id } };
+    const sources = { [contractPath]: fullSources[contractPath] };
     const sourceCodes = { [contractPath]: resolver.resolve(contractPath).source };
     recursivelyGatherDependencySources(
         resolver,
@@ -316,7 +331,8 @@ function recursivelyGatherDependencySources(
  * @param solcVersion The compiler version. e.g. 0.5.0
  */
 export async function getSolcJSAsync(solcVersion: string): Promise<solc.SolcInstance> {
-    const fullSolcVersion = binPaths[solcVersion];
+    const solcJSReleases = await getSolcJSReleasesAsync();
+    const fullSolcVersion = solcJSReleases[solcVersion];
     if (_.isUndefined(fullSolcVersion)) {
         throw new Error(`${solcVersion} is not a known compiler version`);
     }
diff --git a/packages/sol-compiler/src/utils/types.ts b/packages/sol-compiler/src/utils/types.ts
index 64328899d..f756c51bb 100644
--- a/packages/sol-compiler/src/utils/types.ts
+++ b/packages/sol-compiler/src/utils/types.ts
@@ -13,6 +13,10 @@ export interface ContractSourceData {
     [contractName: string]: ContractSpecificSourceData;
 }
 
+export interface BinaryPaths {
+    [key: string]: string;
+}
+
 export interface ContractSpecificSourceData {
     solcVersionRange: string;
     sourceHash: Buffer;
diff --git a/packages/sol-compiler/test/compiler_test.ts b/packages/sol-compiler/test/compiler_test.ts
index 464aa8bb6..cae6bce05 100644
--- a/packages/sol-compiler/test/compiler_test.ts
+++ b/packages/sol-compiler/test/compiler_test.ts
@@ -23,6 +23,9 @@ describe('#Compiler', function(): void {
         contractsDir,
         contracts: constants.contracts,
     };
+    it('should create a Compiler with empty opts', async () => {
+        const _compiler = new Compiler(); // tslint:disable-line no-unused-variable
+    });
     it('should create an Exchange artifact with the correct unlinked binary', async () => {
         compilerOpts.contracts = ['Exchange'];
 
diff --git a/packages/sol-coverage/CHANGELOG.json b/packages/sol-coverage/CHANGELOG.json
index 2a33fe578..dc5ae1a53 100644
--- a/packages/sol-coverage/CHANGELOG.json
+++ b/packages/sol-coverage/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/packages/sol-coverage/CHANGELOG.md b/packages/sol-coverage/CHANGELOG.md
index 0c1916717..1af9b9f26 100644
--- a/packages/sol-coverage/CHANGELOG.md
+++ b/packages/sol-coverage/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/sol-coverage/package.json b/packages/sol-coverage/package.json
index 8f0681639..6724a03df 100644
--- a/packages/sol-coverage/package.json
+++ b/packages/sol-coverage/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-coverage",
-    "version": "2.0.0",
+    "version": "2.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,8 +29,8 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-coverage/README.md",
     "dependencies": {
-        "@0x/sol-tracing-utils": "^6.0.0",
-        "@0x/subproviders": "^3.0.0",
+        "@0x/sol-tracing-utils": "^6.0.2",
+        "@0x/subproviders": "^3.0.2",
         "@0x/typescript-typings": "^4.0.0",
         "ethereum-types": "^2.0.0",
         "lodash": "^4.17.11"
diff --git a/packages/sol-doc/CHANGELOG.json b/packages/sol-doc/CHANGELOG.json
index 2ffa21f26..d9d0ddfa2 100644
--- a/packages/sol-doc/CHANGELOG.json
+++ b/packages/sol-doc/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/packages/sol-doc/CHANGELOG.md b/packages/sol-doc/CHANGELOG.md
index 6eff7d01a..06ea1d7b4 100644
--- a/packages/sol-doc/CHANGELOG.md
+++ b/packages/sol-doc/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/sol-doc/package.json b/packages/sol-doc/package.json
index 2004b5bd2..c413e248f 100644
--- a/packages/sol-doc/package.json
+++ b/packages/sol-doc/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-doc",
-    "version": "2.0.0",
+    "version": "2.0.2",
     "description": "Solidity documentation generator",
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.js",
@@ -25,9 +25,9 @@
     "author": "F. Eugene Aumson",
     "license": "Apache-2.0",
     "dependencies": {
-        "@0x/sol-compiler": "^3.0.0",
-        "@0x/types": "^2.0.0",
-        "@0x/utils": "^4.0.1",
+        "@0x/sol-compiler": "^3.0.2",
+        "@0x/types": "^2.0.2",
+        "@0x/utils": "^4.0.3",
         "ethereum-types": "^2.0.0",
         "ethereumjs-util": "^5.1.1",
         "lodash": "^4.17.11",
diff --git a/packages/sol-profiler/CHANGELOG.json b/packages/sol-profiler/CHANGELOG.json
index 54375890d..89f3f7171 100644
--- a/packages/sol-profiler/CHANGELOG.json
+++ b/packages/sol-profiler/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "2.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.1",
         "changes": [
             {
diff --git a/packages/sol-profiler/CHANGELOG.md b/packages/sol-profiler/CHANGELOG.md
index 32a2bac0a..bf9e59e54 100644
--- a/packages/sol-profiler/CHANGELOG.md
+++ b/packages/sol-profiler/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.2 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.1 - _February 5, 2019_
 
     * Fix a bug when some parts of the profiling report were missing because of the coverage ignore lines (#1535)
diff --git a/packages/sol-profiler/package.json b/packages/sol-profiler/package.json
index 06ca7a708..cce49e22e 100644
--- a/packages/sol-profiler/package.json
+++ b/packages/sol-profiler/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-profiler",
-    "version": "2.0.1",
+    "version": "2.0.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,8 +29,8 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-profiler/README.md",
     "dependencies": {
-        "@0x/sol-tracing-utils": "^6.0.0",
-        "@0x/subproviders": "^3.0.0",
+        "@0x/sol-tracing-utils": "^6.0.2",
+        "@0x/subproviders": "^3.0.2",
         "@0x/typescript-typings": "^4.0.0",
         "ethereum-types": "^2.0.0",
         "lodash": "^4.17.11"
diff --git a/packages/sol-resolver/CHANGELOG.json b/packages/sol-resolver/CHANGELOG.json
index efca37e90..9c02b9148 100644
--- a/packages/sol-resolver/CHANGELOG.json
+++ b/packages/sol-resolver/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/packages/sol-resolver/CHANGELOG.md b/packages/sol-resolver/CHANGELOG.md
index 7e5fd05a8..f23c55ea8 100644
--- a/packages/sol-resolver/CHANGELOG.md
+++ b/packages/sol-resolver/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/sol-resolver/package.json b/packages/sol-resolver/package.json
index 3f0fe3be4..aeb0c6bfc 100644
--- a/packages/sol-resolver/package.json
+++ b/packages/sol-resolver/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-resolver",
-    "version": "2.0.0",
+    "version": "2.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -30,7 +30,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/types": "^2.0.0",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
         "lodash": "^4.17.11"
     },
diff --git a/packages/sol-trace/CHANGELOG.json b/packages/sol-trace/CHANGELOG.json
index 3897b1249..c786a56a3 100644
--- a/packages/sol-trace/CHANGELOG.json
+++ b/packages/sol-trace/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "2.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.1",
         "changes": [
             {
diff --git a/packages/sol-trace/CHANGELOG.md b/packages/sol-trace/CHANGELOG.md
index d828b4744..bcb75c423 100644
--- a/packages/sol-trace/CHANGELOG.md
+++ b/packages/sol-trace/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.2 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.1 - _February 5, 2019_
 
     * Improve error messages when unable to find matching bytecode (#1558)
diff --git a/packages/sol-trace/package.json b/packages/sol-trace/package.json
index a1439de7e..b65a8b002 100644
--- a/packages/sol-trace/package.json
+++ b/packages/sol-trace/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-trace",
-    "version": "2.0.1",
+    "version": "2.0.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,8 +29,8 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-trace/README.md",
     "dependencies": {
-        "@0x/sol-tracing-utils": "^6.0.0",
-        "@0x/subproviders": "^3.0.0",
+        "@0x/sol-tracing-utils": "^6.0.2",
+        "@0x/subproviders": "^3.0.2",
         "@0x/typescript-typings": "^4.0.0",
         "chalk": "^2.3.0",
         "ethereum-types": "^2.0.0",
diff --git a/packages/sol-tracing-utils/CHANGELOG.json b/packages/sol-tracing-utils/CHANGELOG.json
index 6b5db6c8f..911cf6c1f 100644
--- a/packages/sol-tracing-utils/CHANGELOG.json
+++ b/packages/sol-tracing-utils/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "6.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "6.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "6.0.0",
         "changes": [
             {
diff --git a/packages/sol-tracing-utils/CHANGELOG.md b/packages/sol-tracing-utils/CHANGELOG.md
index 74d0ca61f..6f9fa5615 100644
--- a/packages/sol-tracing-utils/CHANGELOG.md
+++ b/packages/sol-tracing-utils/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v6.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v6.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v6.0.0 - _February 5, 2019_
 
     * `SolCompilerArtifactAdapter` now uses `SolResolver` under the hood which allows to resolve `NPM` dependencies properly (#1535)
diff --git a/packages/sol-tracing-utils/package.json b/packages/sol-tracing-utils/package.json
index 082894b2c..8bccb237d 100644
--- a/packages/sol-tracing-utils/package.json
+++ b/packages/sol-tracing-utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-tracing-utils",
-    "version": "6.0.0",
+    "version": "6.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -42,13 +42,13 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-tracing-utils/README.md",
     "dependencies": {
-        "@0x/dev-utils": "^2.0.0",
-        "@0x/sol-compiler": "^3.0.0",
-        "@0x/sol-resolver": "^2.0.0",
-        "@0x/subproviders": "^3.0.0",
+        "@0x/dev-utils": "^2.0.2",
+        "@0x/sol-compiler": "^3.0.2",
+        "@0x/sol-resolver": "^2.0.2",
+        "@0x/subproviders": "^3.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "@types/solidity-parser-antlr": "^0.2.0",
         "chalk": "^2.3.0",
         "ethereum-types": "^2.0.0",
diff --git a/packages/sra-spec/CHANGELOG.json b/packages/sra-spec/CHANGELOG.json
index 0f0d50701..05ea49243 100644
--- a/packages/sra-spec/CHANGELOG.json
+++ b/packages/sra-spec/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/packages/sra-spec/CHANGELOG.md b/packages/sra-spec/CHANGELOG.md
index b971fb3e6..ce7a09708 100644
--- a/packages/sra-spec/CHANGELOG.md
+++ b/packages/sra-spec/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/sra-spec/package.json b/packages/sra-spec/package.json
index 34cfb0205..28cf15938 100644
--- a/packages/sra-spec/package.json
+++ b/packages/sra-spec/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sra-spec",
-    "version": "2.0.0",
+    "version": "2.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -35,7 +35,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sra-spec/README.md",
     "dependencies": {
-        "@0x/json-schemas": "^3.0.0",
+        "@0x/json-schemas": "^3.0.2",
         "@loopback/openapi-v3-types": "^0.8.2"
     },
     "devDependencies": {
diff --git a/packages/subproviders/CHANGELOG.json b/packages/subproviders/CHANGELOG.json
index 647d7c1d9..3d5bade1f 100644
--- a/packages/subproviders/CHANGELOG.json
+++ b/packages/subproviders/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "3.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
diff --git a/packages/subproviders/CHANGELOG.md b/packages/subproviders/CHANGELOG.md
index a3e0969be..b3dfa757a 100644
--- a/packages/subproviders/CHANGELOG.md
+++ b/packages/subproviders/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v3.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v3.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/subproviders/package.json b/packages/subproviders/package.json
index ffba02051..a783bb5a2 100644
--- a/packages/subproviders/package.json
+++ b/packages/subproviders/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/subproviders",
-    "version": "3.0.0",
+    "version": "3.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,11 +29,11 @@
         }
     },
     "dependencies": {
-        "@0x/assert": "^2.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/assert": "^2.0.2",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "@ledgerhq/hw-app-eth": "^4.3.0",
         "@ledgerhq/hw-transport-u2f": "4.24.0",
         "@types/eth-lightwallet": "^3.0.0",
diff --git a/packages/testnet-faucets/package.json b/packages/testnet-faucets/package.json
index dd1faf1b7..c529d4975 100644
--- a/packages/testnet-faucets/package.json
+++ b/packages/testnet-faucets/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/testnet-faucets",
-    "version": "1.0.65",
+    "version": "1.0.68",
     "engines": {
         "node": ">=6.12"
     },
@@ -18,11 +18,11 @@
     "author": "Fabio Berger",
     "license": "Apache-2.0",
     "dependencies": {
-        "0x.js": "^4.0.0",
-        "@0x/subproviders": "^3.0.0",
+        "0x.js": "^4.0.3",
+        "@0x/subproviders": "^3.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "body-parser": "^1.17.1",
         "ethereum-types": "^2.0.0",
         "ethereumjs-tx": "^1.3.5",
diff --git a/packages/types/CHANGELOG.json b/packages/types/CHANGELOG.json
index b9ddb5acf..8f2bf967a 100644
--- a/packages/types/CHANGELOG.json
+++ b/packages/types/CHANGELOG.json
@@ -1,10 +1,36 @@
 [
     {
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
+            },
+            {
+                "note": "Update `ZeroExTransaction` type and add `SignedZeroExTransaction` type",
+                "pr": 1576
+            },
+            {
+                "note": "Add `EIP712DomainWithDefaultSchema` type",
+                "pr": 1576
             }
         ],
         "timestamp": 1549373905
diff --git a/packages/types/CHANGELOG.md b/packages/types/CHANGELOG.md
index a4f185dca..a2bc34dee 100644
--- a/packages/types/CHANGELOG.md
+++ b/packages/types/CHANGELOG.md
@@ -5,9 +5,19 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
+    * Update `ZeroExTransaction` type and add `SignedZeroExTransaction` type (#1576)
+    * Add `EIP712DomainWithDefaultSchema` type (#1576)
 
 ## v1.5.2 - _January 15, 2019_
 
diff --git a/packages/types/package.json b/packages/types/package.json
index 89d1bbd1c..951251c58 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/types",
-    "version": "2.0.0",
+    "version": "2.0.2",
     "engines": {
         "node": ">=6.12"
     },
diff --git a/packages/types/src/index.ts b/packages/types/src/index.ts
index 49f788fb0..b3a083999 100644
--- a/packages/types/src/index.ts
+++ b/packages/types/src/index.ts
@@ -45,11 +45,16 @@ export interface SignedOrder extends Order {
  * ZeroExTransaction for use with 0x Exchange executeTransaction
  */
 export interface ZeroExTransaction {
+    verifyingContractAddress: string;
     salt: BigNumber;
     signerAddress: string;
     data: string;
 }
 
+export interface SignedZeroExTransaction extends ZeroExTransaction {
+    signature: string;
+}
+
 /**
  * Elliptic Curve signature
  */
@@ -685,3 +690,33 @@ export interface DutchAuctionDetails {
     currentAmount: BigNumber;
     currentTimeSeconds: BigNumber;
 }
+
+export interface PackageJSONConfig {
+    postpublish?: {
+        assets?: string[];
+        docOmitExports?: string[];
+        dockerHubRepo?: string;
+    };
+    'abis:comment'?: string;
+    abis?: string;
+    ignoreDependencyVersions?: string;
+    ignoreDependencyVersionsForPackage?: string;
+}
+
+export interface PackageJSON {
+    private?: boolean;
+    version: string;
+    name: string;
+    main?: string;
+    scripts?: { [command: string]: string };
+    config?: PackageJSONConfig;
+    dependencies?: { [dependencyName: string]: string };
+    devDependencies?: { [dependencyName: string]: string };
+    workspaces?: string[];
+}
+
+export interface EIP712DomainWithDefaultSchema {
+    name?: string;
+    version?: string;
+    verifyingContractAddress: string;
+}
diff --git a/packages/utils/CHANGELOG.json b/packages/utils/CHANGELOG.json
index 8671729d3..007591d18 100644
--- a/packages/utils/CHANGELOG.json
+++ b/packages/utils/CHANGELOG.json
@@ -1,5 +1,24 @@
 [
     {
+        "version": "4.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "version": "4.0.2",
+        "changes": [
+            {
+                "note": "ABI Decode NULL for all data types",
+                "pr": 1587
+            }
+        ],
+        "timestamp": 1549452781
+    },
+    {
         "version": "4.0.1",
         "changes": [
             {
diff --git a/packages/utils/CHANGELOG.md b/packages/utils/CHANGELOG.md
index f76166f94..4772bbb86 100644
--- a/packages/utils/CHANGELOG.md
+++ b/packages/utils/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.3 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v4.0.2 - _February 6, 2019_
+
+    * ABI Decode NULL for all data types (#1587)
+
 ## v4.0.1 - _February 5, 2019_
 
     * ABI Decode NULL as False (#1582)
diff --git a/packages/utils/package.json b/packages/utils/package.json
index 8431b98c1..86fecbc7c 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/utils",
-    "version": "4.0.1",
+    "version": "4.0.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -44,7 +44,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/types": "^2.0.0",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
         "@types/node": "*",
         "abortcontroller-polyfill": "^1.1.9",
diff --git a/packages/utils/src/abi_encoder/abstract_data_types/data_type.ts b/packages/utils/src/abi_encoder/abstract_data_types/data_type.ts
index f23324721..db4f02b89 100644
--- a/packages/utils/src/abi_encoder/abstract_data_types/data_type.ts
+++ b/packages/utils/src/abi_encoder/abstract_data_types/data_type.ts
@@ -47,7 +47,8 @@ export abstract class DataType {
         const hasSelector = !_.isUndefined(selector);
         const rawCalldata = new RawCalldata(calldata, hasSelector);
         const rules_ = _.isUndefined(rules) ? constants.DEFAULT_DECODING_RULES : rules;
-        const value = this.generateValue(rawCalldata, rules_);
+        const value =
+            rawCalldata.getSizeInBytes() > 0 ? this.generateValue(rawCalldata, rules_) : this.getDefaultValue(rules_);
         return value;
     }
 
@@ -71,6 +72,7 @@ export abstract class DataType {
 
     public abstract generateCalldataBlock(value: any, parentBlock?: CalldataBlock): CalldataBlock;
     public abstract generateValue(calldata: RawCalldata, rules: DecodingRules): any;
+    public abstract getDefaultValue(rules?: DecodingRules): any;
     public abstract getSignatureType(): string;
     public abstract isStatic(): boolean;
 }
diff --git a/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts b/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts
index 2c6c4b0f6..d45088482 100644
--- a/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts
+++ b/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts
@@ -97,6 +97,27 @@ export abstract class AbstractSetDataType extends DataType {
         return isStatic;
     }
 
+    public getDefaultValue(rules?: DecodingRules): any[] | object {
+        let defaultValue: any[] | object;
+        if (this._isArray && _.isUndefined(this._arrayLength)) {
+            defaultValue = [];
+        } else if (!_.isUndefined(rules) && rules.shouldConvertStructsToObjects && !this._isArray) {
+            defaultValue = {};
+            _.each(this._memberIndexByName, (idx: number, key: string) => {
+                const member = this._members[idx];
+                const memberValue = member.getDefaultValue();
+                (defaultValue as { [key: string]: any })[key] = memberValue;
+            });
+        } else {
+            defaultValue = [];
+            _.each(this._members, (member: DataType, idx: number) => {
+                const memberValue = member.getDefaultValue();
+                (defaultValue as any[]).push(memberValue);
+            });
+        }
+        return defaultValue;
+    }
+
     protected _generateCalldataBlockFromArray(value: any[], parentBlock?: CalldataBlock): SetCalldataBlock {
         // Sanity check: if the set has a defined length then `value` must have the same length.
         if (!_.isUndefined(this._arrayLength) && value.length !== this._arrayLength) {
diff --git a/packages/utils/src/abi_encoder/calldata/raw_calldata.ts b/packages/utils/src/abi_encoder/calldata/raw_calldata.ts
index 189841989..dbc9d4942 100644
--- a/packages/utils/src/abi_encoder/calldata/raw_calldata.ts
+++ b/packages/utils/src/abi_encoder/calldata/raw_calldata.ts
@@ -79,4 +79,9 @@ export class RawCalldata {
     public getSelector(): string {
         return this._selector;
     }
+
+    public getSizeInBytes(): number {
+        const sizeInBytes = this._value.byteLength;
+        return sizeInBytes;
+    }
 }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/address.ts b/packages/utils/src/abi_encoder/evm_data_types/address.ts
index 2278830eb..7e92d3888 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/address.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/address.ts
@@ -12,6 +12,7 @@ export class AddressDataType extends AbstractBlobDataType {
     private static readonly _ADDRESS_SIZE_IN_BYTES = 20;
     private static readonly _DECODED_ADDRESS_OFFSET_IN_BYTES =
         constants.EVM_WORD_WIDTH_IN_BYTES - AddressDataType._ADDRESS_SIZE_IN_BYTES;
+    private static readonly _DEFAULT_VALUE = '0x0000000000000000000000000000000000000000';
 
     public static matchType(type: string): boolean {
         return type === SolidityTypes.Address;
@@ -43,6 +44,10 @@ export class AddressDataType extends AbstractBlobDataType {
         return valueLowercase;
     }
 
+    public getDefaultValue(): string {
+        return AddressDataType._DEFAULT_VALUE;
+    }
+
     public getSignatureType(): string {
         return SolidityTypes.Address;
     }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/bool.ts b/packages/utils/src/abi_encoder/evm_data_types/bool.ts
index ffccd6e53..24887c509 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/bool.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/bool.ts
@@ -10,6 +10,7 @@ import { constants } from '../utils/constants';
 
 export class BoolDataType extends AbstractBlobDataType {
     private static readonly _SIZE_KNOWN_AT_COMPILE_TIME: boolean = true;
+    private static readonly _DEFAULT_VALUE: boolean = false;
 
     public static matchType(type: string): boolean {
         return type === SolidityTypes.Bool;
@@ -47,6 +48,10 @@ export class BoolDataType extends AbstractBlobDataType {
         return value;
     }
 
+    public getDefaultValue(): boolean {
+        return BoolDataType._DEFAULT_VALUE;
+    }
+
     public getSignatureType(): string {
         return SolidityTypes.Bool;
     }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/dynamic_bytes.ts b/packages/utils/src/abi_encoder/evm_data_types/dynamic_bytes.ts
index fa38b63c0..7a49a84b4 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/dynamic_bytes.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/dynamic_bytes.ts
@@ -9,6 +9,7 @@ import { constants } from '../utils/constants';
 
 export class DynamicBytesDataType extends AbstractBlobDataType {
     private static readonly _SIZE_KNOWN_AT_COMPILE_TIME: boolean = false;
+    private static readonly _DEFAULT_VALUE = '0x';
 
     public static matchType(type: string): boolean {
         return type === SolidityTypes.Bytes;
@@ -65,6 +66,10 @@ export class DynamicBytesDataType extends AbstractBlobDataType {
         return value;
     }
 
+    public getDefaultValue(): string {
+        return DynamicBytesDataType._DEFAULT_VALUE;
+    }
+
     public getSignatureType(): string {
         return SolidityTypes.Bytes;
     }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/int.ts b/packages/utils/src/abi_encoder/evm_data_types/int.ts
index f8be1f778..02278f666 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/int.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/int.ts
@@ -15,6 +15,7 @@ export class IntDataType extends AbstractBlobDataType {
     private static readonly _SIZE_KNOWN_AT_COMPILE_TIME: boolean = true;
     private static readonly _MAX_WIDTH: number = 256;
     private static readonly _DEFAULT_WIDTH: number = IntDataType._MAX_WIDTH;
+    private static readonly _DEFAULT_VALUE = new BigNumber(0);
     private readonly _width: number;
     private readonly _minValue: BigNumber;
     private readonly _maxValue: BigNumber;
@@ -50,13 +51,20 @@ export class IntDataType extends AbstractBlobDataType {
     public decodeValue(calldata: RawCalldata): BigNumber | number {
         const valueBuf = calldata.popWord();
         const value = EncoderMath.safeDecodeNumericValue(valueBuf, this._minValue, this._maxValue);
-        const numberOfBytesInUint8 = 8;
-        if (this._width === numberOfBytesInUint8) {
+        if (this._width === constants.NUMBER_OF_BYTES_IN_INT8) {
             return value.toNumber();
         }
         return value;
     }
 
+    public getDefaultValue(): BigNumber | number {
+        const defaultValue = IntDataType._DEFAULT_VALUE;
+        if (this._width === constants.NUMBER_OF_BYTES_IN_INT8) {
+            return defaultValue.toNumber();
+        }
+        return defaultValue;
+    }
+
     public getSignatureType(): string {
         return `${SolidityTypes.Int}${this._width}`;
     }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/pointer.ts b/packages/utils/src/abi_encoder/evm_data_types/pointer.ts
index 250db7c64..50f68f5ea 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/pointer.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/pointer.ts
@@ -18,4 +18,9 @@ export class PointerDataType extends AbstractPointerDataType {
     public getSignature(isDetailed?: boolean): string {
         return this._destination.getSignature(isDetailed);
     }
+
+    public getDefaultValue(): any {
+        const defaultValue = this._destination.getDefaultValue();
+        return defaultValue;
+    }
 }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts b/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts
index cbf1957d7..a965f6796 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts
@@ -58,6 +58,13 @@ export class StaticBytesDataType extends AbstractBlobDataType {
         return value;
     }
 
+    public getDefaultValue(): string {
+        const valueBufPadded = constants.EMPTY_EVM_WORD_BUFFER;
+        const valueBuf = valueBufPadded.slice(0, this._width);
+        const value = ethUtil.bufferToHex(valueBuf);
+        return value;
+    }
+
     private _sanityCheckValue(value: string | Buffer): void {
         if (typeof value === 'string') {
             if (!_.startsWith(value, '0x')) {
diff --git a/packages/utils/src/abi_encoder/evm_data_types/string.ts b/packages/utils/src/abi_encoder/evm_data_types/string.ts
index 97ac46442..f54d739b4 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/string.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/string.ts
@@ -9,6 +9,7 @@ import { constants } from '../utils/constants';
 
 export class StringDataType extends AbstractBlobDataType {
     private static readonly _SIZE_KNOWN_AT_COMPILE_TIME: boolean = false;
+    private static readonly _DEFAULT_VALUE = '';
 
     public static matchType(type: string): boolean {
         return type === SolidityTypes.String;
@@ -52,6 +53,10 @@ export class StringDataType extends AbstractBlobDataType {
         return value;
     }
 
+    public getDefaultValue(): string {
+        return StringDataType._DEFAULT_VALUE;
+    }
+
     public getSignatureType(): string {
         return SolidityTypes.String;
     }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/uint.ts b/packages/utils/src/abi_encoder/evm_data_types/uint.ts
index a82aa789e..d530606b9 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/uint.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/uint.ts
@@ -16,6 +16,7 @@ export class UIntDataType extends AbstractBlobDataType {
     private static readonly _MAX_WIDTH: number = 256;
     private static readonly _DEFAULT_WIDTH: number = UIntDataType._MAX_WIDTH;
     private static readonly _MIN_VALUE = new BigNumber(0);
+    private static readonly _DEFAULT_VALUE = new BigNumber(0);
     private readonly _width: number;
     private readonly _maxValue: BigNumber;
 
@@ -49,13 +50,20 @@ export class UIntDataType extends AbstractBlobDataType {
     public decodeValue(calldata: RawCalldata): BigNumber | number {
         const valueBuf = calldata.popWord();
         const value = EncoderMath.safeDecodeNumericValue(valueBuf, UIntDataType._MIN_VALUE, this._maxValue);
-        const numberOfBytesInUint8 = 8;
-        if (this._width === numberOfBytesInUint8) {
+        if (this._width === constants.NUMBER_OF_BYTES_IN_UINT8) {
             return value.toNumber();
         }
         return value;
     }
 
+    public getDefaultValue(): BigNumber | number {
+        const defaultValue = UIntDataType._DEFAULT_VALUE;
+        if (this._width === constants.NUMBER_OF_BYTES_IN_UINT8) {
+            return defaultValue.toNumber();
+        }
+        return defaultValue;
+    }
+
     public getSignatureType(): string {
         return `${SolidityTypes.Uint}${this._width}`;
     }
diff --git a/packages/utils/src/abi_encoder/utils/constants.ts b/packages/utils/src/abi_encoder/utils/constants.ts
index fc586f295..b45b5b8e8 100644
--- a/packages/utils/src/abi_encoder/utils/constants.ts
+++ b/packages/utils/src/abi_encoder/utils/constants.ts
@@ -1,3 +1,5 @@
+import * as ethUtil from 'ethereumjs-util';
+
 import { DecodingRules, EncodingRules } from './rules';
 
 export const constants = {
@@ -14,4 +16,8 @@ export const constants = {
     DEFAULT_DECODING_RULES: { shouldConvertStructsToObjects: true } as DecodingRules,
     DEFAULT_ENCODING_RULES: { shouldOptimize: true, shouldAnnotate: false } as EncodingRules,
     /* tslint:enable no-object-literal-type-assertion */
+    EMPTY_EVM_WORD_STRING: '0x0000000000000000000000000000000000000000000000000000000000000000',
+    EMPTY_EVM_WORD_BUFFER: ethUtil.toBuffer('0x0000000000000000000000000000000000000000000000000000000000000000'),
+    NUMBER_OF_BYTES_IN_UINT8: 8,
+    NUMBER_OF_BYTES_IN_INT8: 8,
 };
diff --git a/packages/utils/test/abi_encoder/abi_samples/return_value_abis.ts b/packages/utils/test/abi_encoder/abi_samples/return_value_abis.ts
index ac2124011..ad07b3d24 100644
--- a/packages/utils/test/abi_encoder/abi_samples/return_value_abis.ts
+++ b/packages/utils/test/abi_encoder/abi_samples/return_value_abis.ts
@@ -97,3 +97,28 @@ export const mixedStaticAndDynamicReturnValues: MethodAbi = {
     stateMutability: 'nonpayable',
     type: 'function',
 };
+
+export const structuredReturnValue: MethodAbi = {
+    constant: false,
+    inputs: [],
+    name: 'fillOrder',
+    outputs: [
+        {
+            components: [
+                {
+                    name: 'makerAssetFilledAmount',
+                    type: 'uint256',
+                },
+                {
+                    name: 'takerAssetFilledAmount',
+                    type: 'uint256',
+                },
+            ],
+            name: 'fillResults',
+            type: 'tuple',
+        },
+    ],
+    payable: false,
+    stateMutability: 'nonpayable',
+    type: 'function',
+};
diff --git a/packages/utils/test/abi_encoder/evm_data_types_test.ts b/packages/utils/test/abi_encoder/evm_data_types_test.ts
index c146890e0..c09c0d929 100644
--- a/packages/utils/test/abi_encoder/evm_data_types_test.ts
+++ b/packages/utils/test/abi_encoder/evm_data_types_test.ts
@@ -11,6 +11,7 @@ const expect = chai.expect;
 
 describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
     const encodingRules: AbiEncoder.EncodingRules = { shouldOptimize: false }; // optimizer is tested separately.
+    const nullEncodedArgs = '0x';
     describe('Array', () => {
         it('Fixed size; Static elements', async () => {
             // Create DataType object
@@ -207,6 +208,51 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw('Tried to assign NaN value');
         });
+        it('Should decode NULL to default values (Fixed size; Static elements)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'testArray', type: 'int[2]' };
+            const dataType = new AbiEncoder.Array(testDataItem);
+            const args = [new BigNumber(0), new BigNumber(0)];
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default values (Dynamic size; Static elements)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'testArray', type: 'int[]' };
+            const dataType = new AbiEncoder.Array(testDataItem);
+            const args: BigNumber[] = [];
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default values (Fixed size; Dynamic elements)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'testArray', type: 'string[2]' };
+            const dataType = new AbiEncoder.Array(testDataItem);
+            const args = ['', ''];
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default values (Dynamic size; Dynamic elements)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'testArray', type: 'string[]' };
+            const dataType = new AbiEncoder.Array(testDataItem);
+            const args: string[] = [];
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default values (Dynamic Size; Multidimensional; Dynamic Elements)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'testArray', type: 'bytes[][]' };
+            const dataType = new AbiEncoder.Array(testDataItem);
+            const args: string[][] = [];
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('Tuple', () => {
@@ -407,6 +453,46 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw('Could not assign tuple to object: missing key \'field_2\' in object {"field_1":"-5"}');
         });
+        it('Should decode NULL to default values (static elements only)', async () => {
+            // Create DataType object
+            const testDataItem = {
+                name: 'Tuple',
+                type: 'tuple',
+                components: [{ name: 'field_1', type: 'int32' }, { name: 'field_2', type: 'bool' }],
+            };
+            const dataType = new AbiEncoder.Tuple(testDataItem);
+            // Construct args to be encoded
+            const args = { field_1: new BigNumber(0), field_2: false };
+            // Decode Encoded Args and validate result
+            const decodingRules: AbiEncoder.DecodingRules = { shouldConvertStructsToObjects: true };
+            const decodedArgs = dataType.decode(nullEncodedArgs, decodingRules);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default values (static and dynamic elements)', async () => {
+            // Create DataType object
+            const testDataItem = {
+                name: 'Tuple',
+                type: 'tuple',
+                components: [
+                    { name: 'field_1', type: 'int32' },
+                    { name: 'field_2', type: 'string' },
+                    { name: 'field_3', type: 'bool' },
+                    { name: 'field_4', type: 'bytes' },
+                ],
+            };
+            const dataType = new AbiEncoder.Tuple(testDataItem);
+            // Construct args to be encoded
+            const args = {
+                field_1: new BigNumber(0),
+                field_2: '',
+                field_3: false,
+                field_4: '0x',
+            };
+            // Decode Encoded Args and validate result
+            const decodingRules: AbiEncoder.DecodingRules = { shouldConvertStructsToObjects: true };
+            const decodedArgs = dataType.decode(nullEncodedArgs, decodingRules);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('Address', () => {
@@ -450,6 +536,15 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw(`Invalid address: '${args}'`);
         });
+        it('Should decode NULL to default value of address zero', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Address', type: 'address' };
+            const dataType = new AbiEncoder.Address(testDataItem);
+            const args = '0x0000000000000000000000000000000000000000';
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('Bool', () => {
@@ -489,23 +584,14 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
             expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
-        it('Null should decode as False', async () => {
-            // Hack @hysz: there are some cases where `false` is encoded as 0x instead of 0x0.
+        it('Should decode NULL to default value of False', async () => {
             // Create DataType object
             const testDataItem = { name: 'Boolean', type: 'bool' };
             const dataType = new AbiEncoder.Bool(testDataItem);
-            // Construct args to be encoded
             const args = false;
-            // Encode Args and validate result
-            const encodedArgs = '0x';
-            const expectedEncodedArgs = '0x0000000000000000000000000000000000000000000000000000000000000000';
             // Decode Encoded Args and validate result
-            const decodedArgs = dataType.decode(encodedArgs);
+            const decodedArgs = dataType.decode(nullEncodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
-            // Validate signature
-            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
-            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
-            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
     });
 
@@ -705,6 +791,15 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw();
         });
+        it('Should decode NULL to default value of 0', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Integer (256)', type: 'int' };
+            const dataType = new AbiEncoder.Int(testDataItem);
+            const args = new BigNumber(0);
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('Unsigned Integer', () => {
@@ -867,6 +962,15 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw();
         });
+        it('Should decode NULL to default value of 0', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Unsigned Integer (256)', type: 'uint' };
+            const dataType = new AbiEncoder.UInt(testDataItem);
+            const args = new BigNumber(0);
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('Static Bytes', () => {
@@ -1030,6 +1134,33 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw('Tried to assign 0x010, which is contains a half-byte. Use full bytes only.');
         });
+        it('Should decode NULL to default value - Single Byte (byte)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Static Byte', type: 'byte' };
+            const dataType = new AbiEncoder.StaticBytes(testDataItem);
+            const args = '0x00';
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default value - 4 Bytes (bytes4)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Static Bytes4', type: 'bytes4' };
+            const dataType = new AbiEncoder.StaticBytes(testDataItem);
+            const args = '0x00000000';
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default value - 32 Bytes (bytes32)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Static Bytes32', type: 'bytes32' };
+            const dataType = new AbiEncoder.StaticBytes(testDataItem);
+            const args = '0x0000000000000000000000000000000000000000000000000000000000000000';
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('Dynamic Bytes', () => {
@@ -1117,6 +1248,15 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw('Tried to assign 0x010, which is contains a half-byte. Use full bytes only.');
         });
+        it('Should decode NULL to empty byte array', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Dynamic Bytes', type: 'bytes' };
+            const dataType = new AbiEncoder.DynamicBytes(testDataItem);
+            const args = '0x';
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('String', () => {
@@ -1182,5 +1322,14 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
             expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
+        it('Should decode NULL to empty string', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'String', type: 'string' };
+            const dataType = new AbiEncoder.String(testDataItem);
+            // Decode Encoded Args and validate result
+            const args = '';
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 });
diff --git a/packages/utils/test/abi_encoder/return_values_test.ts b/packages/utils/test/abi_encoder/return_values_test.ts
index 308d11ee5..ccdac510d 100644
--- a/packages/utils/test/abi_encoder/return_values_test.ts
+++ b/packages/utils/test/abi_encoder/return_values_test.ts
@@ -1,7 +1,7 @@
 import * as chai from 'chai';
 import 'mocha';
 
-import { AbiEncoder } from '../../src/';
+import { AbiEncoder, BigNumber } from '../../src/';
 import { chaiSetup } from '../utils/chai_setup';
 
 import * as ReturnValueAbis from './abi_samples/return_value_abis';
@@ -11,67 +11,194 @@ const expect = chai.expect;
 
 describe('ABI Encoder: Return Value Encoding/Decoding', () => {
     const encodingRules: AbiEncoder.EncodingRules = { shouldOptimize: false }; // optimizer is tested separately.
-    it('No Return Value', async () => {
-        // Decode return value
-        const method = new AbiEncoder.Method(ReturnValueAbis.noReturnValues);
-        const returnValue = '0x';
-        const decodedReturnValue = method.decodeReturnValues(returnValue, { shouldConvertStructsToObjects: false });
-        const expectedDecodedReturnValue: any[] = [];
-        expect(decodedReturnValue).to.be.deep.equal(expectedDecodedReturnValue);
-    });
-    it('Single static return value', async () => {
-        // Generate Return Value
-        const method = new AbiEncoder.Method(ReturnValueAbis.singleStaticReturnValue);
-        const returnValue = ['0x01020304'];
-        const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
-            shouldConvertStructsToObjects: false,
-        });
-        // Validate decoded return value
-        expect(decodedReturnValue).to.be.deep.equal(returnValue);
-    });
-    it('Multiple static return values', async () => {
-        // Generate Return Value
-        const method = new AbiEncoder.Method(ReturnValueAbis.multipleStaticReturnValues);
-        const returnValue = ['0x01020304', '0x05060708'];
-        const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
-            shouldConvertStructsToObjects: false,
-        });
-        // Validate decoded return value
-        expect(decodedReturnValue).to.be.deep.equal(returnValue);
-    });
-    it('Single dynamic return value', async () => {
-        // Generate Return Value
-        const method = new AbiEncoder.Method(ReturnValueAbis.singleDynamicReturnValue);
-        const returnValue = ['0x01020304'];
-        const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
-            shouldConvertStructsToObjects: false,
-        });
-        // Validate decoded return value
-        expect(decodedReturnValue).to.be.deep.equal(returnValue);
-    });
-    it('Multiple dynamic return values', async () => {
-        // Generate Return Value
-        const method = new AbiEncoder.Method(ReturnValueAbis.multipleDynamicReturnValues);
-        const returnValue = ['0x01020304', '0x05060708'];
-        const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
-            shouldConvertStructsToObjects: false,
-        });
-        // Validate decoded return value
-        expect(decodedReturnValue).to.be.deep.equal(returnValue);
+    const nullEncodedReturnValue = '0x';
+    describe('Standard encoding/decoding', () => {
+        it('No Return Value', async () => {
+            // Decode return value
+            const method = new AbiEncoder.Method(ReturnValueAbis.noReturnValues);
+            const returnValue = '0x';
+            const decodedReturnValue = method.decodeReturnValues(returnValue, { shouldConvertStructsToObjects: false });
+            const expectedDecodedReturnValue: any[] = [];
+            expect(decodedReturnValue).to.be.deep.equal(expectedDecodedReturnValue);
+        });
+        it('Single static return value', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleStaticReturnValue);
+            const returnValue = ['0x01020304'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Multiple static return values', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.multipleStaticReturnValues);
+            const returnValue = ['0x01020304', '0x05060708'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Single dynamic return value', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleDynamicReturnValue);
+            const returnValue = ['0x01020304'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Multiple dynamic return values', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.multipleDynamicReturnValues);
+            const returnValue = ['0x01020304', '0x05060708'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Mixed static/dynamic return values', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.mixedStaticAndDynamicReturnValues);
+            const returnValue = ['0x01020304', '0x05060708'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Should decode NULL as default value (single; static)', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleStaticReturnValue);
+            const returnValue = ['0x00000000'];
+
+            const decodedReturnValue = method.decodeReturnValues(nullEncodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Should decode NULL as default value (multiple; static)', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.multipleStaticReturnValues);
+            const returnValue = ['0x00000000', '0x00000000'];
+            const decodedReturnValue = method.decodeReturnValues(nullEncodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Should decode NULL as default value (single; dynamic)', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleDynamicReturnValue);
+            const returnValue = ['0x'];
+            const decodedReturnValue = method.decodeReturnValues(nullEncodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
     });
-    it('Mixed static/dynamic return values', async () => {
-        // Generate Return Value
-        const method = new AbiEncoder.Method(ReturnValueAbis.mixedStaticAndDynamicReturnValues);
-        const returnValue = ['0x01020304', '0x05060708'];
-        const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
-            shouldConvertStructsToObjects: false,
-        });
-        // Validate decoded return value
-        expect(decodedReturnValue).to.be.deep.equal(returnValue);
+
+    describe('Strict encoding/decoding', () => {
+        it('No Return Value', async () => {
+            // Decode return value
+            const method = new AbiEncoder.Method(ReturnValueAbis.noReturnValues);
+            const returnValue = '0x';
+            const decodedReturnValue = method.strictDecodeReturnValue<void>(returnValue);
+            const expectedDecodedReturnValue = undefined;
+            expect(decodedReturnValue).to.be.deep.equal(expectedDecodedReturnValue);
+        });
+        it('Single static return value', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleStaticReturnValue);
+            const returnValue = ['0x01020304'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.strictDecodeReturnValue<string>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue[0]);
+        });
+        it('Multiple static return values', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.multipleStaticReturnValues);
+            const returnValue = ['0x01020304', '0x05060708'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.strictDecodeReturnValue<[string, string]>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Single dynamic return value', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleDynamicReturnValue);
+            const returnValue = ['0x01020304'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.strictDecodeReturnValue<string>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue[0]);
+        });
+        it('Multiple dynamic return values', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.multipleDynamicReturnValues);
+            const returnValue = ['0x01020304', '0x05060708'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.strictDecodeReturnValue<[string, string]>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Struct should include fields', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.structuredReturnValue);
+            const returnValue = {
+                fillResults: {
+                    makerAssetFilledAmount: new BigNumber(50),
+                    takerAssetFilledAmount: new BigNumber(40),
+                },
+            };
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.strictDecodeReturnValue<{
+                makerAssetFilledAmount: BigNumber;
+                takerAssetFilledAmount: BigNumber;
+            }>(encodedReturnValue);
+            // Validate decoded return value
+            // Note that only the contents of `fillResults`, not the key itself, is decoded.
+            // This is by design, as only a struct's contents are encoded and returned by a funciton call.
+            expect(decodedReturnValue).to.be.deep.equal(returnValue.fillResults);
+        });
+        it('Should decode NULL as default value (single; static)', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleStaticReturnValue);
+            const returnValue = '0x00000000';
+            const encodedReturnValue = '0x';
+            const decodedReturnValue = method.strictDecodeReturnValue<string>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Should decode NULL as default value (multiple; static)', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.multipleStaticReturnValues);
+            const returnValue = ['0x00000000', '0x00000000'];
+            const encodedReturnValue = '0x';
+            const decodedReturnValue = method.strictDecodeReturnValue<[string, string]>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Should decode NULL as default value (single; dynamic)', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleDynamicReturnValue);
+            const returnValue = '0x';
+            const encodedReturnValue = '0x';
+            const decodedReturnValue = method.strictDecodeReturnValue<string>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
     });
 });
diff --git a/packages/web3-wrapper/CHANGELOG.json b/packages/web3-wrapper/CHANGELOG.json
index 8dd98a4ae..49dbe5a64 100644
--- a/packages/web3-wrapper/CHANGELOG.json
+++ b/packages/web3-wrapper/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "version": "4.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1549547375
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "4.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "4.0.0",
         "changes": [
             {
diff --git a/packages/web3-wrapper/CHANGELOG.md b/packages/web3-wrapper/CHANGELOG.md
index 255b37ade..461d55a26 100644
--- a/packages/web3-wrapper/CHANGELOG.md
+++ b/packages/web3-wrapper/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v4.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
 ## v4.0.0 - _February 5, 2019_
 
     * Upgrade the bignumber.js to v8.0.2 (#1517)
diff --git a/packages/web3-wrapper/package.json b/packages/web3-wrapper/package.json
index eab2e6bce..d28a9894f 100644
--- a/packages/web3-wrapper/package.json
+++ b/packages/web3-wrapper/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/web3-wrapper",
-    "version": "4.0.0",
+    "version": "4.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -54,10 +54,10 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/assert": "^2.0.0",
-        "@0x/json-schemas": "^3.0.0",
+        "@0x/assert": "^2.0.2",
+        "@0x/json-schemas": "^3.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
+        "@0x/utils": "^4.0.3",
         "ethereum-types": "^2.0.0",
         "ethereumjs-util": "^5.1.1",
         "ethers": "~4.0.4",
diff --git a/packages/website/less/all.less b/packages/website/less/all.less
index 5d1dccc98..d288b182b 100644
--- a/packages/website/less/all.less
+++ b/packages/website/less/all.less
@@ -88,13 +88,6 @@ code {
         color: #1d5cde; // linkBlue
     }
 
-    h1,
-    h2,
-    h3,
-    h4 {
-        padding-top: 15px;
-    }
-
     p,
     blockquote,
     ol,
diff --git a/packages/website/package.json b/packages/website/package.json
index 651b0e118..165ce5725 100644
--- a/packages/website/package.json
+++ b/packages/website/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/website",
-    "version": "0.0.68",
+    "version": "0.0.71",
     "engines": {
         "node": ">=6.12"
     },
@@ -20,18 +20,18 @@
     "author": "Fabio Berger",
     "license": "Apache-2.0",
     "dependencies": {
-        "@0x/asset-buyer": "^5.0.0",
+        "@0x/asset-buyer": "^5.0.3",
         "@0x/contract-addresses": "^2.2.1",
-        "@0x/contract-wrappers": "^6.0.1",
-        "@0x/json-schemas": "^3.0.0",
-        "@0x/order-utils": "^4.0.0",
-        "@0x/react-docs": "^2.0.0",
-        "@0x/react-shared": "^2.0.0",
-        "@0x/subproviders": "^3.0.0",
-        "@0x/types": "^2.0.0",
+        "@0x/contract-wrappers": "^7.0.2",
+        "@0x/json-schemas": "^3.0.2",
+        "@0x/order-utils": "^6.0.1",
+        "@0x/react-docs": "^2.0.3",
+        "@0x/react-shared": "^2.0.3",
+        "@0x/subproviders": "^3.0.2",
+        "@0x/types": "^2.0.2",
         "@0x/typescript-typings": "^4.0.0",
-        "@0x/utils": "^4.0.1",
-        "@0x/web3-wrapper": "^4.0.0",
+        "@0x/utils": "^4.0.3",
+        "@0x/web3-wrapper": "^4.0.2",
         "@reach/dialog": "^0.1.2",
         "@types/react-lazyload": "^2.3.1",
         "@types/react-loadable": "^5.4.2",
@@ -47,7 +47,7 @@
         "find-versions": "^2.0.0",
         "jsonschema": "^1.2.0",
         "less": "^2.7.2",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "material-ui": "^0.20.0",
         "moment": "2.21.0",
         "numeral": "^2.0.6",
diff --git a/python-packages/json_schemas/src/zero_ex/json_schemas/schemas/zero_ex_transaction_schema.json b/python-packages/json_schemas/src/zero_ex/json_schemas/schemas/zero_ex_transaction_schema.json
index 0c714f14d..ffdf1f229 100644
--- a/python-packages/json_schemas/src/zero_ex/json_schemas/schemas/zero_ex_transaction_schema.json
+++ b/python-packages/json_schemas/src/zero_ex/json_schemas/schemas/zero_ex_transaction_schema.json
@@ -1,10 +1,11 @@
 {
     "id": "/zeroExTransactionSchema",
     "properties": {
+        "verifyingContractAddress": { "$ref": "/addressSchema" },
         "data": { "$ref": "/hexSchema" },
         "signerAddress": { "$ref": "/addressSchema" },
         "salt": { "$ref": "/wholeNumberSchema" }
     },
-    "required": ["data", "salt", "signerAddress"],
+    "required": ["verifyingContractAddress", "data", "salt", "signerAddress"],
     "type": "object"
 }
diff --git a/tsconfig.json b/tsconfig.json
index 0a063c85b..bfa83503e 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -40,6 +40,7 @@
         { "path": "./packages/contract-addresses" },
         { "path": "./packages/contract-artifacts" },
         { "path": "./packages/contract-wrappers" },
+        { "path": "./packages/contracts-gen" },
         { "path": "./packages/dev-utils" },
         { "path": "./packages/ethereum-types" },
         { "path": "./packages/fill-scenarios" },
diff --git a/yarn.lock b/yarn.lock
index 03b62f49b..fae178e3e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -472,6 +472,121 @@
     npmlog "^4.1.2"
     write-file-atomic "^2.3.0"
 
+"@0x/contracts-asset-proxy@1.0.2":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@0x/contracts-asset-proxy/-/contracts-asset-proxy-1.0.2.tgz#48a432a52a019ee632e50456f2687c85a5b57535"
+  dependencies:
+    "@0x/base-contract" "^4.0.1"
+    "@0x/contracts-erc20" "^1.0.2"
+    "@0x/contracts-erc721" "^1.0.2"
+    "@0x/contracts-test-utils" "^3.0.1"
+    "@0x/contracts-utils" "^2.0.1"
+    "@0x/order-utils" "^5.0.0"
+    "@0x/types" "^2.0.1"
+    "@0x/typescript-typings" "^4.0.0"
+    "@0x/utils" "^4.0.2"
+    "@0x/web3-wrapper" "^4.0.1"
+    ethereum-types "^2.0.0"
+    lodash "^4.17.5"
+
+"@0x/contracts-erc20@1.0.2":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@0x/contracts-erc20/-/contracts-erc20-1.0.2.tgz#67cfefd4458b262d575bb1b07f63bc3dfed4daeb"
+  dependencies:
+    "@0x/base-contract" "^4.0.1"
+    "@0x/contracts-exchange-libs" "^1.0.2"
+    "@0x/contracts-utils" "^2.0.1"
+    "@0x/types" "^2.0.1"
+    "@0x/typescript-typings" "^4.0.0"
+    "@0x/utils" "^4.0.2"
+    "@0x/web3-wrapper" "^4.0.1"
+    ethereum-types "^2.0.0"
+    lodash "^4.17.5"
+
+"@0x/contracts-erc721@1.0.2":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@0x/contracts-erc721/-/contracts-erc721-1.0.2.tgz#e7309ae57de266bb9c4947de50ba16a89203ad08"
+  dependencies:
+    "@0x/base-contract" "^4.0.1"
+    "@0x/contracts-utils" "^2.0.1"
+    "@0x/types" "^2.0.1"
+    "@0x/typescript-typings" "^4.0.0"
+    "@0x/utils" "^4.0.2"
+    "@0x/web3-wrapper" "^4.0.1"
+    ethereum-types "^2.0.0"
+    lodash "^4.17.5"
+
+"@0x/contracts-exchange-libs@1.0.2":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@0x/contracts-exchange-libs/-/contracts-exchange-libs-1.0.2.tgz#0682c01cdb3e36100bda0ffbdf9badb5b8a01fc4"
+  dependencies:
+    "@0x/base-contract" "^4.0.1"
+    "@0x/contracts-utils" "^2.0.1"
+    "@0x/order-utils" "^5.0.0"
+    "@0x/types" "^2.0.1"
+    "@0x/typescript-typings" "^4.0.0"
+    "@0x/utils" "^4.0.2"
+    "@0x/web3-wrapper" "^4.0.1"
+    ethereum-types "^2.0.0"
+    lodash "^4.17.5"
+
+"@0x/contracts-exchange@1.0.2":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@0x/contracts-exchange/-/contracts-exchange-1.0.2.tgz#4c02378b26a7bf6324e16a41f2851c43fed82c63"
+  dependencies:
+    "@0x/base-contract" "^4.0.1"
+    "@0x/contracts-asset-proxy" "^1.0.2"
+    "@0x/contracts-erc20" "^1.0.2"
+    "@0x/contracts-erc721" "^1.0.2"
+    "@0x/contracts-exchange-libs" "^1.0.2"
+    "@0x/contracts-test-utils" "^3.0.1"
+    "@0x/contracts-utils" "^2.0.1"
+    "@0x/order-utils" "^5.0.0"
+    "@0x/types" "^2.0.1"
+    "@0x/typescript-typings" "^4.0.0"
+    "@0x/utils" "^4.0.2"
+    "@0x/web3-wrapper" "^4.0.1"
+    ethereum-types "^2.0.0"
+    ethereumjs-util "^5.1.1"
+    lodash "^4.17.5"
+
+"@0x/contracts-utils@2.0.1":
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/@0x/contracts-utils/-/contracts-utils-2.0.1.tgz#32e298ab5e6edb045c37294063ff928b629db0a4"
+  dependencies:
+    "@0x/base-contract" "^4.0.1"
+    "@0x/order-utils" "^5.0.0"
+    "@0x/types" "^2.0.1"
+    "@0x/typescript-typings" "^4.0.0"
+    "@0x/utils" "^4.0.2"
+    "@0x/web3-wrapper" "^4.0.1"
+    bn.js "^4.11.8"
+    ethereum-types "^2.0.0"
+    ethereumjs-util "^5.1.1"
+    lodash "^4.17.5"
+
+"@0x/order-utils@^5.0.0":
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/@0x/order-utils/-/order-utils-5.0.0.tgz#7f43e0310ace31738895881501c8dda9c3a3aefa"
+  dependencies:
+    "@0x/abi-gen-wrappers" "^3.0.1"
+    "@0x/assert" "^2.0.1"
+    "@0x/base-contract" "^4.0.1"
+    "@0x/contract-addresses" "^2.2.1"
+    "@0x/contract-artifacts" "^1.3.0"
+    "@0x/json-schemas" "^3.0.1"
+    "@0x/types" "^2.0.1"
+    "@0x/typescript-typings" "^4.0.0"
+    "@0x/utils" "^4.0.2"
+    "@0x/web3-wrapper" "^4.0.1"
+    "@types/node" "*"
+    bn.js "^4.11.8"
+    ethereum-types "^2.0.0"
+    ethereumjs-abi "0.6.5"
+    ethereumjs-util "^5.1.1"
+    ethers "~4.0.4"
+    lodash "^4.17.11"
+
 "@0xproject/npm-cli-login@^0.0.11":
   version "0.0.11"
   resolved "https://registry.yarnpkg.com/@0xproject/npm-cli-login/-/npm-cli-login-0.0.11.tgz#3f1ec06112ce62aad300ff0575358f68aeecde2e"
@@ -1486,6 +1601,10 @@
   version "0.0.29"
   resolved "https://registry.yarnpkg.com/@types/pluralize/-/pluralize-0.0.29.tgz#6ffa33ed1fc8813c469b859681d09707eb40d03c"
 
+"@types/prettier@^1.15.2":
+  version "1.15.2"
+  resolved "https://registry.yarnpkg.com/@types/prettier/-/prettier-1.15.2.tgz#91594ea7cb6f3b1f7ea69f32621246654c7cc231"
+
 "@types/prop-types@*":
   version "15.5.5"
   resolved "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.5.5.tgz#17038dd322c2325f5da650a94d5f9974943625e3"
@@ -1535,7 +1654,6 @@
 "@types/react-dom@^16.0.6":
   version "16.0.11"
   resolved "https://registry.yarnpkg.com/@types/react-dom/-/react-dom-16.0.11.tgz#bd10ccb0d9260343f4b9a49d4f7a8330a5c1f081"
-  integrity sha512-x6zUx9/42B5Kl2Vl9HlopV8JF64wLpX3c+Pst9kc1HgzrsH+mkehe/zmHMQTplIrR48H2gpU7ZqurQolYu8XBA==
   dependencies:
     "@types/react" "*"
 
@@ -7794,7 +7912,7 @@ got@^6.7.1:
 
 graceful-fs@4.1.15, graceful-fs@^3.0.0, graceful-fs@^4.0.0, graceful-fs@^4.1.10, graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.6, graceful-fs@^4.1.9, graceful-fs@~1.2.0:
   version "4.1.15"
-  resolved "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.1.15.tgz#ffb703e1066e8a0eeaa4c8b80ba9253eeefbfb00"
+  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.15.tgz#ffb703e1066e8a0eeaa4c8b80ba9253eeefbfb00"
 
 "graceful-readlink@>= 1.0.0":
   version "1.0.1"
@@ -12794,6 +12912,10 @@ prettier@^1.14.3, prettier@^1.15.3:
   version "1.15.3"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.15.3.tgz#1feaac5bdd181237b54dbe65d874e02a1472786a"
 
+prettier@^1.16.3:
+  version "1.16.3"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.16.3.tgz#8c62168453badef702f34b45b6ee899574a6a65d"
+
 pretty-bytes@^1.0.4:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/pretty-bytes/-/pretty-bytes-1.0.4.tgz#0a22e8210609ad35542f8c8d5d2159aff0751c84"
@@ -13340,14 +13462,14 @@ react-dom@^16.3.2:
     prop-types "^15.6.0"
 
 react-dom@^16.4.2:
-  version "16.7.0"
-  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.7.0.tgz#a17b2a7ca89ee7390bc1ed5eb81783c7461748b8"
-  integrity sha512-D0Ufv1ExCAmF38P2Uh1lwpminZFRXEINJe53zRAbm4KPwSyd6DY/uDoS0Blj9jvPpn1+wivKpZYc8aAAN/nAkg==
+  version "16.8.1"
+  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.8.1.tgz#ec860f98853d09d39bafd3a6f1e12389d283dbb4"
+  integrity sha512-N74IZUrPt6UiDjXaO7UbDDFXeUXnVhZzeRLy/6iqqN1ipfjrhR60Bp5NuBK+rv3GMdqdIuwIl22u1SYwf330bg==
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
     prop-types "^15.6.2"
-    scheduler "^0.12.0"
+    scheduler "^0.13.1"
 
 react-dom@^16.5.2:
   version "16.5.2"
@@ -13400,14 +13522,14 @@ react-helmet@^5.2.0:
     prop-types "^15.5.4"
     react-side-effect "^1.1.0"
 
-react-highlight@0xproject/react-highlight:
+react-highlight@0xproject/react-highlight#react-peer-deps:
   version "1.0.0"
   resolved "https://codeload.github.com/0xproject/react-highlight/tar.gz/a70c7631e09508dafc4719cbcc6f121074e1937d"
   dependencies:
     highlight.js "^9.11.0"
     highlightjs-solidity "^1.0.5"
-    react "^16.4.2"
-    react-dom "^16.4.2"
+    react "^16.5.2"
+    react-dom "^16.5.2"
 
 react-hot-loader@^4.3.3:
   version "4.3.4"
@@ -13653,14 +13775,14 @@ react@^16.3.2:
     prop-types "^15.6.0"
 
 react@^16.4.2:
-  version "16.7.0"
-  resolved "https://registry.yarnpkg.com/react/-/react-16.7.0.tgz#b674ec396b0a5715873b350446f7ea0802ab6381"
-  integrity sha512-StCz3QY8lxTb5cl2HJxjwLFOXPIFQp+p+hxQfc8WE0QiLfCtIlKj8/+5tjjKm8uSTlAW+fCPaavGFS06V9Ar3A==
+  version "16.8.1"
+  resolved "https://registry.yarnpkg.com/react/-/react-16.8.1.tgz#ae11831f6cb2a05d58603a976afc8a558e852c4a"
+  integrity sha512-wLw5CFGPdo7p/AgteFz7GblI2JPOos0+biSoxf1FPsGxWQZdN/pj6oToJs1crn61DL3Ln7mN86uZ4j74p31ELQ==
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
     prop-types "^15.6.2"
-    scheduler "^0.12.0"
+    scheduler "^0.13.1"
 
 react@^16.5.2:
   version "16.5.2"
@@ -14533,10 +14655,10 @@ schedule@^0.5.0:
   dependencies:
     object-assign "^4.1.1"
 
-scheduler@^0.12.0:
-  version "0.12.0"
-  resolved "https://registry.yarnpkg.com/scheduler/-/scheduler-0.12.0.tgz#8ab17699939c0aedc5a196a657743c496538647b"
-  integrity sha512-t7MBR28Akcp4Jm+QoR63XgAi9YgCUmgvDHqf5otgAj4QvdoBE4ImCX0ffehefePPG+aitiYHp0g/mW6s4Tp+dw==
+scheduler@^0.13.1:
+  version "0.13.1"
+  resolved "https://registry.yarnpkg.com/scheduler/-/scheduler-0.13.1.tgz#1a217df1bfaabaf4f1b92a9127d5d732d85a9591"
+  integrity sha512-VJKOkiKIN2/6NOoexuypwSrybx13MY7NSy9RNt8wPvZDMRT1CW6qlpF5jXRToXNHz3uWzbm2elNpZfXfGPqP9A==
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"