diff --git a/appengine/webpack/package.json b/appengine/webpack/package.json
index 8ba759332f..db75af505e 100644
--- a/appengine/webpack/package.json
+++ b/appengine/webpack/package.json
@@ -13,7 +13,7 @@
     "prestart": "npm run bundle"
   },
   "dependencies": {
-    "express": "4.14.1",
+    "express": "4.16.0",
     "pug": "2.0.0-beta6",
     "webpack": "1.14.0"
   }