diff --git a/tests/src/notifiers/line_notifier_message_api_test.py b/tests/src/notifiers/line_notifier_message_api_test.py
index 2fd7ce0..b2ed36e 100644
--- a/tests/src/notifiers/line_notifier_message_api_test.py
+++ b/tests/src/notifiers/line_notifier_message_api_test.py
@@ -5,7 +5,6 @@
 import unittest
 from datetime import datetime
 from datetime import timedelta
-from unittest.mock import MagicMock
 from unittest.mock import mock_open
 from unittest.mock import patch