diff --git a/sklearn/utils/tests/test_extmath.py b/sklearn/utils/tests/test_extmath.py
index 07a553c8cf09d..8fbc66e5e8e96 100644
--- a/sklearn/utils/tests/test_extmath.py
+++ b/sklearn/utils/tests/test_extmath.py
@@ -4,6 +4,7 @@
 #
 # License: BSD 3 clause
 import numpy as np
+import scipy
 from scipy import sparse
 from scipy import linalg
 from scipy import stats
@@ -33,6 +34,9 @@
 from sklearn.utils.extmath import stable_cumsum
 from sklearn.utils.extmath import safe_sparse_dot
 from sklearn.datasets import make_low_rank_matrix, make_sparse_spd_matrix
+from sklearn.externals._packaging.version import parse as parse_version
+
+sp_version = parse_version(scipy.__version__)
 
 
 def test_density():
@@ -59,6 +63,11 @@ def test_uniform_weights():
         mode, score = stats.mode(x, axis)
         mode2, score2 = weighted_mode(x, weights, axis=axis)
 
+        # See https://github.com/scipy/scipy/issues/16418
+        if sp_version >= parse_version("1.9.0") and axis is not None:
+            mode = np.expand_dims(mode, axis=axis)
+            score = np.expand_dims(score, axis=axis)
+
         assert_array_equal(mode, mode2)
         assert_array_equal(score, score2)