Use covdefaults to handle coveragerc
diff --git a/tests/detect_aws_credentials_test.py b/tests/detect_aws_credentials_test.py
index 41b7b0a..4f00744 100644
--- a/tests/detect_aws_credentials_test.py
+++ b/tests/detect_aws_credentials_test.py
@@ -1,5 +1,6 @@
+from unittest.mock import patch
+
 import pytest
-from mock import patch
 
 from pre_commit_hooks.detect_aws_credentials import get_aws_cred_files_from_env
 from pre_commit_hooks.detect_aws_credentials import get_aws_secrets_from_env