diff --git a/tests/unit/test_tts_oss_transfer.py b/tests/unit/test_tts_oss_transfer.py
index 785a2260e..63203c2d4 100755
--- a/tests/unit/test_tts_oss_transfer.py
+++ b/tests/unit/test_tts_oss_transfer.py
@@ -6,8 +6,8 @@
 
 from __future__ import annotations
 
-from datetime import datetime, timezone
 import unittest
+from datetime import datetime, timezone
 from unittest.mock import MagicMock, patch
 
 from packages.application.cosyvoice_service import CosyVoiceService