diff --git a/package.json b/package.json
index 957ac31..426191f 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   "devDependencies": {
     "grunt": "^0.4.5",
     "grunt-contrib-jshint": "^0.10.0",
-    "grunt-contrib-uglify": "^0.6.0",
+    "grunt-contrib-uglify": "^4.0.1",
     "load-grunt-tasks": "^3.1.0",
     "requirejs": "^2.1.15",
     "time-grunt": "^1.1.0"