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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 c65e050ad..723ddb066 100644
--- a/packages/contracts/test/tutorials/arbitrage.ts
+++ b/packages/contracts/test/tutorials/arbitrage.ts
@@ -4,6 +4,7 @@
// import { BigNumber } from '@0xproject/utils';
// import { Web3Wrapper } from '@0xproject/web3-wrapper';
// import * as chai from 'chai';
+// import 'make-promises-safe';
// import ethUtil = require('ethereumjs-util');
// import * as Web3 from 'web3';