diff --git a/api/core/rag/index_processor/constant/built_in_field.py b/api/core/rag/index_processor/constant/built_in_field.py
index 9ad69e7fe3..7c270a32d0 100644
--- a/api/core/rag/index_processor/constant/built_in_field.py
+++ b/api/core/rag/index_processor/constant/built_in_field.py
@@ -15,3 +15,4 @@ class MetadataDataSource(StrEnum):
     notion_import = "notion"
     local_file = "file_upload"
     online_document = "online_document"
+    online_drive = "online_drive"