diff --git a/package.json b/package.json
index 9a496fb..a2c20a6 100644
--- a/package.json
+++ b/package.json
@@ -47,6 +47,6 @@
     "mkdirp": "^0.5.1",
     "require-dir": "^0.3.0",
     "run-sequence": "^1.1.4",
-    "uglify-js": "^2.4.24"
+    "uglify-js": "^3.0.14"
   }
 }