diff --git a/package.json b/package.json
index c05d53a..15b4eed 100644
--- a/package.json
+++ b/package.json
@@ -53,6 +53,6 @@
     "replace": "^0.3.0",
     "rollup": "^0.41.4",
     "standard": "^10.0.2",
-    "uglify-js": "^2.8.22"
+    "uglify-js": "^3.0.0"
   }
 }