2 files changed, 2 insertions, 0 deletions
diff --git a/packages/dev-utils/test/blockchain_lifecycle_test.ts b/packages/dev-utils/test/blockchain_lifecycle_test.ts
index 2cfad9644..857a6b50e 100644
--- a/packages/dev-utils/test/blockchain_lifecycle_test.ts
+++ b/packages/dev-utils/test/blockchain_lifecycle_test.ts
@@ -1,6 +1,7 @@
 import { BlockParamLiteral } from '@0xproject/types';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import 'mocha';
 
 import { BlockchainLifecycle, web3Factory } from '../src';
diff --git a/packages/dev-utils/test/rpc_test.ts b/packages/dev-utils/test/rpc_test.ts
index b6998f604..45d1226c2 100644
--- a/packages/dev-utils/test/rpc_test.ts
+++ b/packages/dev-utils/test/rpc_test.ts
@@ -1,6 +1,7 @@
 import { BlockParamLiteral } from '@0xproject/types';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import 'mocha';
 
 import { web3Factory } from '../src';