diff --git a/snakemake_helper/vr_experiment.py b/snakemake_helper/vr_experiment.py
index a337195..5bf485d 100644
--- a/snakemake_helper/vr_experiment.py
+++ b/snakemake_helper/vr_experiment.py
@@ -3,6 +3,7 @@
 The main functionality for this module lies in the VRExperiment class, which represents
 all the parameter sets which are being tested.
 """
+
 from collections.abc import Iterable, Sequence
 from itertools import product
 from pathlib import Path
diff --git a/tests/test_vr_experiment.py b/tests/test_vr_experiment.py
index d175ba6..0322abd 100644
--- a/tests/test_vr_experiment.py
+++ b/tests/test_vr_experiment.py
@@ -1,4 +1,5 @@
 """Tests for the VRExperiment class."""
+
 from itertools import product
 from pathlib import Path
 from typing import Any