diff --git a/render.yaml b/render.yaml
index f47d01d..fde4697 100644
--- a/render.yaml
+++ b/render.yaml
@@ -14,7 +14,7 @@ services:
       - key: TZ
         value: Asia/Shanghai
       - key: PORT
-        generateValue: false
+        value: "4000"
       - key: DATA_DIR
         value: /app/data
       - key: NODE_ENV