diff --git a/server/routers/knowledge_router.py b/server/routers/knowledge_router.py
index 35841605..515a8afc 100644
--- a/server/routers/knowledge_router.py
+++ b/server/routers/knowledge_router.py
@@ -100,9 +100,7 @@ async def create_database(
             reranker_cfg = params.get("reranker_config")
             if reranker_cfg:
                 if kb == "milvus":
-                    logger.info(
-                        "reranker_config is deprecated, please use query_params.options instead"
-                    )
+                    logger.info("reranker_config is deprecated, please use query_params.options instead")
                 else:
                     logger.warning(f"{kb} does not support reranker, ignoring reranker_config")
                 # 移除 reranker_config，不再保存
@@ -767,6 +765,7 @@ async def get_knowledge_base_query_params(db_id: str, current_user: User = Depen
         logger.error(f"获取知识库查询参数失败 {e}, {traceback.format_exc()}")
         raise HTTPException(status_code=500, detail=str(e))
 
+
 def _merge_saved_options(params: dict, saved_options: dict) -> dict:
     """将用户保存的配置合并到默认配置中"""
     for option in params.get("options", []):
diff --git a/src/knowledge/implementations/milvus.py b/src/knowledge/implementations/milvus.py
index 704cc18c..4300f3a3 100644
--- a/src/knowledge/implementations/milvus.py
+++ b/src/knowledge/implementations/milvus.py
@@ -565,9 +565,7 @@ class MilvusKB(KnowledgeBase):
                         key=lambda item: item.get("rerank_score", item.get("score", 0.0)), reverse=True
                     )
                     elapsed = time.time() - rerank_start
-                    logger.info(
-                        f"Reranking completed for {db_id} in {elapsed:.3f}s with model {reranker_model}"
-                    )
+                    logger.info(f"Reranking completed for {db_id} in {elapsed:.3f}s with model {reranker_model}")
                 finally:
                     await reranker.aclose()
 
diff --git a/test/api/test_knowledge_router.py b/test/api/test_knowledge_router.py
index e5d3eeb2..482b1f90 100644
--- a/test/api/test_knowledge_router.py
+++ b/test/api/test_knowledge_router.py
@@ -101,14 +101,14 @@ async def test_admin_can_create_vector_db_with_reranker(test_client, admin_heade
             "recall_top_k": 20,
         }
         update_response = await test_client.put(
-            f"/api/knowledge/databases/{db_id}/query-params",
-            json=update_params,
-            headers=admin_headers
+            f"/api/knowledge/databases/{db_id}/query-params", json=update_params, headers=admin_headers
         )
         assert update_response.status_code == 200, update_response.text
 
         # 再次获取参数，验证保存成功
-        params_response2 = await test_client.get(f"/api/knowledge/databases/{db_id}/query-params", headers=admin_headers)
+        params_response2 = await test_client.get(
+            f"/api/knowledge/databases/{db_id}/query-params", headers=admin_headers
+        )
         assert params_response2.status_code == 200, params_response2.text
 
         params_payload2 = params_response2.json()