diff --git a/package.json b/package.json
index 467231574..1f9f809a2 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "grunt-contrib-concat": "~1.0.1",
     "grunt-contrib-copy": "~1.0.0",
     "grunt-contrib-jshint": "~1.1.0",
-    "grunt-contrib-uglify": "~2.3.0",
+    "grunt-contrib-uglify": "~3.0.0",
     "grunt-contrib-watch": "~1.0.0",
     "grunt-esnext": "0.0.3",
     "grunt-simple-mocha": "^0.4.0",