diff --git a/package.json b/package.json
index d5484b0079c..b8f6ac774e6 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
     "gulp-rename": "^1.2.0",
     "gulp-replace": "^0.4.0",
     "gulp-shell": "^0.5.2",
-    "gulp-uglify": "^3.0.0",
+    "gulp-uglify": "2.1.2",
     "gulp-util": "^3.0.0",
     "gulp-webdriver": "^1.0.1",
     "ignore-loader": "^0.1.2",