diff --git a/tests/test_cli.py b/tests/test_cli.py
index 0d5c46c..5b86715 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -2,6 +2,7 @@
 import os
 
 from click.testing import CliRunner
+
 from nomad_polymerization_reactions.cli import cli
 
 
diff --git a/tests/test_utils.py b/tests/test_utils.py
index e48b2a4..e1476a5 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -2,6 +2,7 @@
 
 import pytest
 import yaml
+
 from nomad_polymerization_reactions.utils import generate_archive_from_json