diff --git a/ChatApp/s-sasaki-0529/server/package.json b/ChatApp/s-sasaki-0529/server/package.json
index f26bb46b9..150cf4223 100644
--- a/ChatApp/s-sasaki-0529/server/package.json
+++ b/ChatApp/s-sasaki-0529/server/package.json
@@ -4,7 +4,7 @@
   "main": "index.js",
   "license": "MIT",
   "dependencies": {
-    "express": "^4.17.1",
+    "express": "^4.22.0",
     "socket.io": "^4.2.0"
   }
 }