diff --git a/app.yaml b/app.yaml
index 83da3a2..266d0a8 100644
--- a/app.yaml
+++ b/app.yaml
@@ -2,7 +2,7 @@ http:
   port: 9703
 
 database:
-  driver: sqlite
+  driver: sqlite    # sqlite时只填写db即可，目前仅支持sqlite | mysql | pgsql
   host:
   port:
   user: