diff --git a/package.json b/package.json
index 58887c8..c2be89d 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "mz": "^2.0.0",
     "postcss": "^5.0.10",
     "slave": "^1.2.2",
-    "uglify-js": "^2.4.24"
+    "uglify-js": "^2.8.5"
   },
   "devDependencies": {
     "bluebird": "^3.4.6",