diff --git a/package.json b/package.json
index e871d8721..bf618c66c 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "eth-lightwallet": "^2.2.2",
     "eth-store": "^1.1.0",
     "ethereumjs-tx": "^1.0.0",
-    "ethereumjs-util": "^2.6.0",
+    "ethereumjs-util": "^4.3.0",
     "faux-jax": "git+https://github.com/kumavis/faux-jax.git#c3648de04804f3895c5b4972750cae5b51ddb103",
     "hat": "0.0.3",
     "inject-css": "^0.1.1",