diff --git a/app/polymer/package.json b/app/polymer/package.json
index c2c4e9570be..9c591a758e8 100644
--- a/app/polymer/package.json
+++ b/app/polymer/package.json
@@ -50,7 +50,7 @@
     "react": "^16.3.1",
     "react-dom": "^16.3.1",
     "webpack": "^4.5.0",
-    "webpack-hot-middleware": "^2.21.2"
+    "webpack-hot-middleware": "^2.22.0"
   },
   "devDependencies": {
     "nodemon": "^1.17.3",