diff --git a/package.json b/package.json
index 421bc65..2f6b831 100644
--- a/package.json
+++ b/package.json
@@ -48,6 +48,6 @@
     "mkdirp": "^0.5.1",
     "require-dir": "^0.3.0",
     "run-sequence": "^1.2.1",
-    "uglify-js": "^2.4.24"
+    "uglify-js": "^3.0.4"
   }
 }