diff --git a/mlxtend/classifier/tests/test_stacking_classifier.py b/mlxtend/classifier/tests/test_stacking_classifier.py
index b8ba3817f..3f2d86c93 100644
--- a/mlxtend/classifier/tests/test_stacking_classifier.py
+++ b/mlxtend/classifier/tests/test_stacking_classifier.py
@@ -7,9 +7,9 @@
 import random
 
 import numpy as np
+import pytest
 from numpy.testing import assert_almost_equal
 from packaging.version import Version
-import pytest
 from scipy import sparse
 from sklearn import __version__ as sklearn_version
 from sklearn import exceptions