diff --git a/merico/unit_tests/ut_workflow.py b/merico/unit_tests/ut_workflow.py
index 052ecbe..d7e72fe 100644
--- a/merico/unit_tests/ut_workflow.py
+++ b/merico/unit_tests/ut_workflow.py
@@ -1,3 +1,4 @@
+from cache import LocalCache
 from typing import Dict, List, Tuple
 
 from find_context import (
@@ -17,7 +18,6 @@ from propose_test import propose_test
 from tools.file_util import retrieve_file_content
 from write_tests import write_and_print_tests
 
-from cache import LocalCache
 from lib.chatmark import Checkbox, Form, Step, TextEditor