diff --git a/package.json b/package.json
index a5c00bd..feb3f97 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "grunt-contrib-coffee": "^0.13.0",
     "grunt-contrib-copy": "^0.8.2",
     "grunt-contrib-less": "^1.0.1",
-    "grunt-contrib-uglify": "^0.11.0",
+    "grunt-contrib-uglify": "^2.3.0",
     "grunt-contrib-watch": "^0.6.1",
     "grunt-crowdin-request": "1.0.2",
     "grunt-crx": "1.0.2",