diff --git a/package.json b/package.json
index 690e6d6..80611b7 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "grunt": "^1.0.1",
     "grunt-browserify": "^5.0.0",
     "grunt-contrib-copy": "^1.0.0",
-    "grunt-contrib-uglify": "^2.0.0",
+    "grunt-contrib-uglify": "^3.0.0",
     "grunt-contrib-watch": "^1.0.0",
     "grunt-exorcise": "^2.1.1",
     "grunt-istanbul": "^0.7.1",