diff --git a/ChatApp/s-sasaki-0529/server/package.json b/ChatApp/s-sasaki-0529/server/package.json
index f26bb46b9..89f36fe59 100644
--- a/ChatApp/s-sasaki-0529/server/package.json
+++ b/ChatApp/s-sasaki-0529/server/package.json
@@ -5,6 +5,6 @@
   "license": "MIT",
   "dependencies": {
     "express": "^4.17.1",
-    "socket.io": "^4.2.0"
+    "socket.io": "^4.5.2"
   }
 }