diff --git a/appengine/hello-world/package.json b/appengine/hello-world/package.json
index a90e2bbeba..82aecbcf79 100644
--- a/appengine/hello-world/package.json
+++ b/appengine/hello-world/package.json
@@ -22,7 +22,7 @@
     "e2e-test": "samples test deploy"
   },
   "dependencies": {
-    "express": "4.15.4"
+    "express": "4.21.2"
   },
   "devDependencies": {
     "@google-cloud/nodejs-repo-tools": "1.4.17"