diff --git a/package.json b/package.json
index 9bbe43d..6e2f945 100644
--- a/package.json
+++ b/package.json
@@ -72,7 +72,7 @@
     "gulp-tslint": "^4.3.4",
     "tslint": "^3.6.0",
     "gulp-typescript": "^2.12.1",
-    "gulp-uglify": "^1.5.3",
+    "gulp-uglify": "^3.0.0",
     "gulp-uncss": "^1.0.5",
     "gulp-util": "^3.0.7",
     "gulp-wait": "^0.0.2",