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-rw-r--r--packages/contracts/test/tutorials/arbitrage.ts1
1 files changed, 1 insertions, 0 deletions
diff --git a/packages/contracts/test/tutorials/arbitrage.ts b/packages/contracts/test/tutorials/arbitrage.ts
index 3d07a55a2..8e2c8de8f 100644
--- a/packages/contracts/test/tutorials/arbitrage.ts
+++ b/packages/contracts/test/tutorials/arbitrage.ts
@@ -5,6 +5,7 @@ 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 { AccountLevelsContract } from '../../src/contract_wrappers/generated/account_levels';