diff --git a/package.json b/package.json
index e8b2a3e..1a7d197 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "grunt-contrib-watch": "^0.6.1",
     "grunt-eslint": "^17.3.1",
     "grunt-node-tap": "^0.1.61",
-    "istanbul": "^0.3.22",
+    "istanbul": "^0.4.0",
     "react": "^0.12.2",
     "react-native": "^0.11.4",
     "react-templates": "^0.1.22",