diff --git a/package.json b/package.json
index 350298239f..376c88bfe4 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
     "eslint-config-openlayers": "^2.0.0",
     "expect.js": "0.3.1",
     "gaze": "^0.5.1",
-    "istanbul": "0.4.1",
+    "istanbul": "0.4.2",
     "jquery": "2.2.0",
     "mocha": "2.3.4",
     "mocha-phantomjs-core": "^1.3.0",