diff --git a/src/cifkit/models/cif.py b/src/cifkit/models/cif.py
index f269b13..e015a8f 100644
--- a/src/cifkit/models/cif.py
+++ b/src/cifkit/models/cif.py
@@ -2,9 +2,7 @@
 import os
 
 # Bond pair
-from cifkit.coordination.bond_distance import (
-    get_shortest_distance_per_bond_pair,
-)
+from cifkit.coordination.bond_distance import get_shortest_distance_per_bond_pair
 from cifkit.coordination.composition import (
     compute_avg_CN,
     get_bond_counts,
@@ -32,10 +30,7 @@
     get_radius_values_per_element,
 )
 from cifkit.figures import polyhedron
-from cifkit.occupancy.mixing import (
-    get_mixing_type_per_pair_dict,
-    get_site_mixing_type,
-)
+from cifkit.occupancy.mixing import get_mixing_type_per_pair_dict, get_site_mixing_type
 from cifkit.preprocessors.environment import get_site_connections
 
 # Coordination number
@@ -44,10 +39,7 @@
 # Supercell generation
 from cifkit.preprocessors.supercell import get_supercell_points
 from cifkit.preprocessors.supercell_util import get_cell_atom_count
-from cifkit.utils.bond_pair import (
-    get_bond_pairs,
-    get_pairs_sorted_by_mendeleev,
-)
+from cifkit.utils.bond_pair import get_bond_pairs, get_pairs_sorted_by_mendeleev
 
 # Edit .cif file
 from cifkit.utils.cif_editor import edit_cif_file_based_on_db
diff --git a/tests/core/coordination/test_bond_distance.py b/tests/core/coordination/test_bond_distance.py
index b9bde1c..211731d 100644
--- a/tests/core/coordination/test_bond_distance.py
+++ b/tests/core/coordination/test_bond_distance.py
@@ -1,6 +1,4 @@
-from cifkit.coordination.bond_distance import (
-    get_shortest_distance_per_bond_pair,
-)
+from cifkit.coordination.bond_distance import get_shortest_distance_per_bond_pair
 
 
 def test_get_minimum_dist_per_bond_pair(
diff --git a/tests/core/models/test_cif_ensemble.py b/tests/core/models/test_cif_ensemble.py
index c78d752..396c1fe 100644
--- a/tests/core/models/test_cif_ensemble.py
+++ b/tests/core/models/test_cif_ensemble.py
@@ -6,7 +6,7 @@
 import pytest
 
 from cifkit import CifEnsemble
-from cifkit.utils.folder import get_file_count, get_file_paths, copy_files
+from cifkit.utils.folder import copy_files, get_file_count, get_file_paths
 
 
 @pytest.mark.fast
diff --git a/tests/core/util/test_cif_editor.py b/tests/core/util/test_cif_editor.py
index 3c52e44..3608997 100644
--- a/tests/core/util/test_cif_editor.py
+++ b/tests/core/util/test_cif_editor.py
@@ -6,10 +6,7 @@
 import gemmi
 import pytest
 
-from cifkit.utils.cif_editor import (
-    add_hashtag_in_first_line,
-    remove_author_loop,
-)
+from cifkit.utils.cif_editor import add_hashtag_in_first_line, remove_author_loop
 from cifkit.utils.cif_parser import get_unitcell_lengths