diff --git a/app/polymer/package.json b/app/polymer/package.json
index ba5a756e04e3..16f1fc1ca340 100644
--- a/app/polymer/package.json
+++ b/app/polymer/package.json
@@ -60,7 +60,7 @@
     "json-stringify-safe": "^5.0.1",
     "json5": "^0.5.1",
     "lodash.pick": "^4.4.0",
-    "polymer-webpack-loader": "2.0.1",
+    "polymer-webpack-loader": "3.1.0",
     "postcss-flexbugs-fixes": "^3.2.0",
     "postcss-loader": "^2.0.8",
     "prop-types": "^15.6.0",