diff --git a/lightrag/api/__init__.py b/lightrag/api/__init__.py
index d512d983..952266f6 100644
--- a/lightrag/api/__init__.py
+++ b/lightrag/api/__init__.py
@@ -1 +1 @@
-__api_version__ = "0177"
+__api_version__ = "0178"
diff --git a/lightrag/api/routers/document_routes.py b/lightrag/api/routers/document_routes.py
index c8b74a7d..1e21aa4f 100644
--- a/lightrag/api/routers/document_routes.py
+++ b/lightrag/api/routers/document_routes.py
@@ -866,7 +866,7 @@ async def background_delete_documents(
         if pipeline_status.get("busy", False):
             logger.warning("Error: Unexpected pipeline busy state, aborting deletion.")
             return  # Abort deletion operation
-        
+
         # Set pipeline status to busy for deletion
         pipeline_status.update(
             {
@@ -982,14 +982,16 @@ async def background_delete_documents(
             completion_msg = f"Deletion completed: {len(successful_deletions)} successful, {len(failed_deletions)} failed"
             pipeline_status["latest_message"] = completion_msg
             pipeline_status["history_messages"].append(completion_msg)
-            
+
             # Check if there are pending document indexing requests
             has_pending_request = pipeline_status.get("request_pending", False)
 
         # If there are pending requests, start document processing pipeline
         if has_pending_request:
             try:
-                logger.info("Processing pending document indexing requests after deletion")
+                logger.info(
+                    "Processing pending document indexing requests after deletion"
+                )
                 await rag.apipeline_process_enqueue_documents()
             except Exception as e:
                 logger.error(f"Error processing pending documents after deletion: {e}")