diff --git a/deploying-simple-hello-express-app/package-lock.json b/deploying-simple-hello-express-app/package-lock.json
index 1d72140..5961e79 100644
--- a/deploying-simple-hello-express-app/package-lock.json
+++ b/deploying-simple-hello-express-app/package-lock.json
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diff --git a/deploying-simple-hello-express-app/package.json b/deploying-simple-hello-express-app/package.json
index 52c512f..e0f852e 100644
--- a/deploying-simple-hello-express-app/package.json
+++ b/deploying-simple-hello-express-app/package.json
@@ -9,6 +9,6 @@
   "author": "jxlwqq",
   "license": "ISC",
   "dependencies": {
-    "express": "^4.19.2"
+    "express": "^4.21.0"
   }
 }