diff --git a/package.json b/package.json
index e0dfb7f..a313bc1 100644
--- a/package.json
+++ b/package.json
@@ -97,7 +97,7 @@
     "regenerator": "0.10.0",
     "require-globify": "^1.3.0",
     "typescript": "^2.0.3",
-    "uglify-js": "^3.0.8",
+    "uglify-js": "3.1.3",
     "watch": "^1.0.0"
   }
 }