diff --git a/tests/test_grmf.py b/tests/test_grmf.py
index 06121e4..7e84fea 100644
--- a/tests/test_grmf.py
+++ b/tests/test_grmf.py
@@ -143,6 +143,7 @@ def test_compare_truncated_normal(d: int, is_sparse: bool, lower: np.ndarray, up
 
     assert test_outcome
 
+
 @pytest.mark.parametrize("mean", [0.5, 1.3])
 @pytest.mark.parametrize("scale", [0.1, 1])
 @pytest.mark.parametrize("upper", [np.inf, None, 1.3])