diff --git a/server/tasks.py b/server/tasks.py
index 07a4c33..2b1af03 100644
--- a/server/tasks.py
+++ b/server/tasks.py
@@ -25,7 +25,7 @@
 from langchain.schema import Document
 
 
-LARK_HOST = 'https://open.feishu.cn'
+LARK_HOST = app.config.get('LARK_HOST') or 'https://open.feishu.cn'
 
 
 def create_celery_app(app=None):