diff --git a/tests/test_11k_v2.py b/tests/test_11k_v2.py
index aa13a802a976ec3de312aa04beb70e45ebf3c2aa..12662886ed4eea1a2fa654c80b9666c53e5af515 100644
--- a/tests/test_11k_v2.py
+++ b/tests/test_11k_v2.py
@@ -98,6 +98,7 @@ def test_protocol_consistency():
     for s in subset["test"]:
         assert s.label in [0.0, 1.0]
 
+
 def test_protocol_consistency_bbox():
     from ptbench.data.tbx11k_simplified_v2 import dataset_with_bboxes
 
diff --git a/tests/test_11k_v3.py b/tests/test_11k_v3.py
index 8688b604061589e4e2869cfe056e91d005f893df..848b48757d6dc745f83f03d994732ea4b11ca2b0 100644
--- a/tests/test_11k_v3.py
+++ b/tests/test_11k_v3.py
@@ -98,6 +98,7 @@ def test_protocol_consistency():
     for s in subset["test"]:
         assert s.label in [0.0, 1.0, 2.0, 3.0]
 
+
 def test_protocol_consistency_bbox():
     from ptbench.data.tbx11k_simplified_v3 import dataset_with_bboxes
 
diff --git a/tests/test_mc_ch_in_11k_RS.py b/tests/test_mc_ch_in_11k_RS.py
index 64db66f7d58eb6c6a5592dbe5bb4e4011b1b2d5b..52d8e1ada37d01616c9aa55295d55b428601d80c 100644
--- a/tests/test_mc_ch_in_11k_RS.py
+++ b/tests/test_mc_ch_in_11k_RS.py
@@ -2,7 +2,8 @@
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-"""Tests for the aggregated Montgomery-Shenzhen-Indian-tbx11k_simplified dataset."""
+"""Tests for the aggregated Montgomery-Shenzhen-Indian-tbx11k_simplified
+dataset."""
 
 
 def test_dataset_consistency():
diff --git a/tests/test_mc_ch_in_11kv2_RS.py b/tests/test_mc_ch_in_11kv2_RS.py
index 8d44dcb8c35ec8e4e5a27c3327f318f9a73bf93b..123ac0a5df30fffea6f2c0b26c9bbc7963f05b1e 100644
--- a/tests/test_mc_ch_in_11kv2_RS.py
+++ b/tests/test_mc_ch_in_11kv2_RS.py
@@ -2,7 +2,8 @@
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-"""Tests for the aggregated Montgomery-Shenzhen-Indian-tbx11k_simplified_v2 dataset."""
+"""Tests for the aggregated Montgomery-Shenzhen-Indian-tbx11k_simplified_v2
+dataset."""
 
 
 def test_dataset_consistency():