diff --git a/mlxtend/classifier/tests/test_stacking_classifier.py b/mlxtend/classifier/tests/test_stacking_classifier.py
index d76640601..849119d07 100644
--- a/mlxtend/classifier/tests/test_stacking_classifier.py
+++ b/mlxtend/classifier/tests/test_stacking_classifier.py
@@ -570,7 +570,11 @@ def test_decision_function():
     if Version(sklearn_version) < Version("0.22"):
         assert scores_mean == 0.95, scores_mean
     else:
-        assert scores_mean == 0.93, scores_mean
+        min_allowed_score = 0.92
+        max_allowed_score = 0.95
+        assert (
+            min_allowed_score <= scores_mean <= max_allowed_score
+        ), "Score is out of the allowed range."
 
 
 def test_drop_col_unsupported():