diff --git a/package.json b/package.json
index d62af71..f7d6765 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,6 @@
     "hellojs": "^1.4.3",
     "highlight.js": "^8.4.0",
     "markdown": "^0.5.0",
-    "uglifyify": "^3.0.1"
+    "uglifyify": "^5.0.2"
   }
 }