diff --git a/packages/subproviders/package.json b/packages/subproviders/package.json
index b724e5daeb..7ff0c5b09f 100644
--- a/packages/subproviders/package.json
+++ b/packages/subproviders/package.json
@@ -18,6 +18,7 @@
   },
   "dependencies": {
     "@0xproject/assert": "^0.0.7",
+    "@0xproject/utils": "^0.1.0",
     "bn.js": "^4.11.8",
     "es6-promisify": "^5.0.0",
     "ethereum-address": "^0.0.4",