diff --git a/old/package.json b/old/package.json
index 1ce7a4e..a4fffd4 100644
--- a/old/package.json
+++ b/old/package.json
@@ -22,7 +22,7 @@
     "jade": "=1.11.0",
     "chokidar": "=1.0.3",
     "stylus": "=0.50.0",
-    "uglify-js": "=2.4.16",
+    "uglify-js": "=3.7.5",
     "markdown": "=0.5.0"
   }
 }