diff --git a/api/.env.example b/api/.env.example
index e947c5584..eb88c114e 100644
--- a/api/.env.example
+++ b/api/.env.example
@@ -75,6 +75,7 @@ DB_PASSWORD=difyai123456
 DB_HOST=localhost
 DB_PORT=5432
 DB_DATABASE=dify
+SQLALCHEMY_POOL_PRE_PING=true
 
 # Storage configuration
 # use for store upload files, private keys...