diff --git a/vercel.json b/vercel.json
index 0a2936e..9b43730 100644
--- a/vercel.json
+++ b/vercel.json
@@ -1,7 +1,7 @@
 {
     "functions": {
       "api/chat.ts": {
-        "runtime": "vercel/node@18"
+        "runtime": "vercel/node@18.20.5"
       }
     }
   }