diff --git a/app/polymer/package.json b/app/polymer/package.json
index d6e2435e99c9..01c22edac752 100644
--- a/app/polymer/package.json
+++ b/app/polymer/package.json
@@ -52,7 +52,7 @@
     "react-dev-utils": "^5.0.0",
     "react-dom": "^16.0.0",
     "redux": "^3.7.2",
-    "uglifyjs-webpack-plugin": "^1.2.3",
+    "uglifyjs-webpack-plugin": "^2.0.0",
     "util-deprecate": "^1.0.2",
     "webpack": "^3.11.0",
     "webpack-hot-middleware": "^2.21.2"