diff --git a/package.json b/package.json
index f488f7b1..26cd0add 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "web3": "^0.15.0",
     "bignumber.js": "debris/bignumber.js#master",
     "wrench": "^1.5.8",
-    "ethersim": "^0.1.1"
+    "ethersim": "^0.3.0"
   },
   "author": "Iuri Matias <iuri.matias@gmail.com>",
   "contributors": [],