diff --git a/numpy/lib/tests/test_nanfunctions.py b/numpy/lib/tests/test_nanfunctions.py
index 64464edccfc0..7cdcff32dc80 100644
--- a/numpy/lib/tests/test_nanfunctions.py
+++ b/numpy/lib/tests/test_nanfunctions.py
@@ -818,6 +818,7 @@ def test_keepdims(self):
             (-3, -1),
         ]
     )
+    @pytest.mark.filterwarnings("ignore:All-NaN slice:RuntimeWarning")
     def test_keepdims_out(self, axis):
         d = np.ones((3, 5, 7, 11))
         # Randomly set some elements to NaN:
@@ -1021,6 +1022,7 @@ def test_keepdims(self):
             (-3, -1),
         ]
     )
+    @pytest.mark.filterwarnings("ignore:All-NaN slice:RuntimeWarning")
     def test_keepdims_out(self, q, axis):
         d = np.ones((3, 5, 7, 11))
         # Randomly set some elements to NaN: