diff --git a/api/utils/validation_utils.py b/api/utils/validation_utils.py
index 20017f6376..c51cf5acc4 100644
--- a/api/utils/validation_utils.py
+++ b/api/utils/validation_utils.py
@@ -854,7 +854,7 @@ class SearchDatasetReq(BaseModel):
     keyword: Annotated[bool, Field(default=False)]
     search_id: Annotated[str | None, Field(default=None)]
     rerank_id: Annotated[str | None, Field(default=None)]
-    tenant_rerank_id: Annotated[str | None, Field(default=None)]
+    tenant_rerank_id: Annotated[int | None, Field(default=None)]
     meta_data_filter: Annotated[dict | None, Field(default=None)]