3 files changed, 3 insertions, 0 deletions
diff --git a/packages/contracts/test/exchange/core.ts b/packages/contracts/test/exchange/core.ts
index e40b564c6..72e6c9b0c 100644
--- a/packages/contracts/test/exchange/core.ts
+++ b/packages/contracts/test/exchange/core.ts
@@ -4,6 +4,7 @@ import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import ethUtil = require('ethereumjs-util');
+import 'make-promises-safe';
 import * as Web3 from 'web3';
 
 import { DummyTokenContract } from '../../src/contract_wrappers/generated/dummy_token';
diff --git a/packages/contracts/test/exchange/helpers.ts b/packages/contracts/test/exchange/helpers.ts
index 441c1bc28..c3b947983 100644
--- a/packages/contracts/test/exchange/helpers.ts
+++ b/packages/contracts/test/exchange/helpers.ts
@@ -4,6 +4,7 @@ import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import ethUtil = require('ethereumjs-util');
+import 'make-promises-safe';
 
 import {
     ExchangeContract,
diff --git a/packages/contracts/test/exchange/wrapper.ts b/packages/contracts/test/exchange/wrapper.ts
index 57ccd05bd..cda1432c1 100644
--- a/packages/contracts/test/exchange/wrapper.ts
+++ b/packages/contracts/test/exchange/wrapper.ts
@@ -4,6 +4,7 @@ import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import * as Web3 from 'web3';
 
 import { DummyTokenContract } from '../../src/contract_wrappers/generated/dummy_token';