diff --git a/package.json b/package.json
index fa4fe68..938a0e4 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "grunt-contrib-clean": "^1.0.0",
     "grunt-contrib-concat": "^1.0.1",
     "grunt-contrib-jshint": "^1.1.0",
-    "grunt-contrib-uglify": "^2.0.0",
+    "grunt-contrib-uglify": "^3.1.0",
     "grunt-conventional-changelog": "^6.1.0",
     "grunt-conventional-github-releaser": "^1.0.0",
     "grunt-endline": "^0.6.1",