diff --git a/package.json b/package.json
index b142cb2315..a08d8d90d4 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
     "eslint-plugin-openlayers-internal": "2.1.0",
     "expect.js": "0.3.1",
     "gaze": "^1.0.0",
-    "istanbul": "0.4.4",
+    "istanbul": "0.4.5",
     "jquery": "3.1.0",
     "mocha": "3.0.2",
     "mocha-phantomjs-core": "^1.3.0",