diff --git a/api/core/tools/signature.py b/api/core/tools/signature.py
index f46e669a68..5cdf473542 100644
--- a/api/core/tools/signature.py
+++ b/api/core/tools/signature.py
@@ -5,6 +5,8 @@ import os
 import time
 
 from configs import dify_config
+
+
 def sign_tool_file(tool_file_id: str, extension: str) -> str:
     """
     sign file to get a temporary url for plugin access
diff --git a/api/core/tools/tool_file_manager.py b/api/core/tools/tool_file_manager.py
index 47b66b9fe8..ece02f9d59 100644
--- a/api/core/tools/tool_file_manager.py
+++ b/api/core/tools/tool_file_manager.py
@@ -19,7 +19,6 @@ from extensions.ext_storage import storage
 from models.model import MessageFile
 from models.tools import ToolFile
 
-
 logger = logging.getLogger(__name__)
 
 from sqlalchemy.engine import Engine