diff --git a/package.json b/package.json
index cb7b935..29fc149 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
   "dependencies": {
     "bip39": "^2.2.0",
     "ethereumjs-wallet": "0.6.5",
-    "ethereumjs-util": "^5.1.1",
+    "ethereumjs-util": "^7.1.5",
     "ethereumjs-tx": "^1.3.7",
     "web3": "^0.20.7",
     "web3-provider-engine": "^14.0.5"