diff --git a/tests/tendermint/test_lib.py b/tests/tendermint/test_lib.py
index c684368c..13638b02 100644
--- a/tests/tendermint/test_lib.py
+++ b/tests/tendermint/test_lib.py
@@ -1,9 +1,9 @@
 import os
+from unittest.mock import patch
 
 import pytest
 
 from bigchaindb import backend
-from unittest.mock import patch
 
 
 pytestmark = pytest.mark.tendermint