diff --git a/offline-backend-20260512/.env b/offline-backend-20260512/.env
index 7271a16d..66b368c2 100644
--- a/offline-backend-20260512/.env
+++ b/offline-backend-20260512/.env
@@ -59,3 +59,4 @@ ELEMENT_STATE_FILE=/app/backend/.deer-flow/element-bot-token
 # PYTHON_EXTRA_INDEX_URL=
 # PYTHON_TRUSTED_HOST=your-python-mirror
 MYSQL_DATABASE_URL=mysql+asyncmy://deerflow:deerflow123@192.168.0.123:3306/deerflow?charset=utf8mb4
+DEER_FLOW_NOTEBOOK_API_BASE=http://127.0.0.1:8003
\ No newline at end of file