diff --git a/package.json b/package.json
index 9b9fff7..3725a66 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
   },
   "devDependencies": {
     "coveralls": "^2.11.2",
-    "istanbul": "0.3.5",
+    "istanbul": "0.4.3",
     "jscs": "2.7.0",
     "jshint": "2",
     "jshint-full-path": "1.1.1",