diff --git a/tests/fast/test_all_types.py b/tests/fast/test_all_types.py
index 07dc5f70..2162cfe5 100644
--- a/tests/fast/test_all_types.py
+++ b/tests/fast/test_all_types.py
@@ -377,9 +377,9 @@ def test_fetchnumpy(self, cur_type):
             ),
             "interval": np.ma.array(
                 [
-                    np.timedelta64(0),
-                    np.timedelta64(2675722599999999000),
-                    np.timedelta64(42),
+                    np.timedelta64(0, "us"),
+                    np.timedelta64(2675722599999999000, "us"),
+                    np.timedelta64(42, "us"),
                 ],
                 mask=[0, 0, 1],
             ),