diff --git a/merico/unit_tests/main.py b/merico/unit_tests/main.py
index 31f796a..957316d 100644
--- a/merico/unit_tests/main.py
+++ b/merico/unit_tests/main.py
@@ -3,9 +3,9 @@ import os
 import sys
 
 import click
+from cache import LocalCache
 import openai
 
-from cache import LocalCache
 
 sys.path.append(os.path.dirname(__file__))