diff --git a/package.json b/package.json
index bfcc687..1f6befa 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
   "homepage": "https://github.com/podio/podio-js",
   "devDependencies": {
     "coveralls": "2.11.4",
-    "istanbul": "0.3.22",
+    "istanbul": "0.4.0",
     "jasmine-node": "1.14.5",
     "sinon": "1.17.1"
   },