diff --git a/test/tools/utils.ts b/test/tools/utils.ts
index 383115fa454..4ad185316c3 100644
--- a/test/tools/utils.ts
+++ b/test/tools/utils.ts
@@ -1,6 +1,7 @@
 import { EJSON } from 'bson';
 import * as BSON from 'bson';
 import { expect } from 'chai';
+import { Readable } = require('stream');
 import { setTimeout } from 'timers';
 import { inspect, promisify } from 'util';