diff --git a/tests/test_clip_intensity_percentilesd.py b/tests/test_clip_intensity_percentilesd.py
index 193fa8b487..7e00ef09de 100644
--- a/tests/test_clip_intensity_percentilesd.py
+++ b/tests/test_clip_intensity_percentilesd.py
@@ -23,6 +23,7 @@
 
 
 class TestClipIntensityPercentilesd2D(NumpyImageTestCase2D):
+
     @parameterized.expand([[p] for p in TEST_NDARRAYS])
     def test_hard_clipping_two_sided(self, p):
         key = "img"
@@ -124,6 +125,7 @@ def test_ill_both_none(self):
 
 
 class TestClipIntensityPercentilesd3D(NumpyImageTestCase3D):
+
     @parameterized.expand([[p] for p in TEST_NDARRAYS])
     def test_hard_clipping_two_sided(self, p):
         key = "img"
diff --git a/tests/test_regularization.py b/tests/test_regularization.py
index c6f727cb54..4df60b9808 100644
--- a/tests/test_regularization.py
+++ b/tests/test_regularization.py
@@ -20,6 +20,7 @@
 
 
 class TestMixup(unittest.TestCase):
+
     def setUp(self) -> None:
         set_determinism(seed=0)
 
@@ -59,6 +60,7 @@ def test_mixupd(self):
 
 
 class TestCutMix(unittest.TestCase):
+
     def setUp(self) -> None:
         set_determinism(seed=0)
 
@@ -89,6 +91,7 @@ def test_cutmixd(self):
 
 
 class TestCutOut(unittest.TestCase):
+
     def setUp(self) -> None:
         set_determinism(seed=0)