diff --git a/xarray/tests/test_array_api.py b/xarray/tests/test_array_api.py
index d47995745e0..5af9f076df2 100644
--- a/xarray/tests/test_array_api.py
+++ b/xarray/tests/test_array_api.py
@@ -92,6 +92,7 @@ def test_broadcast_during_arithmetic(arrays: tuple[xr.DataArray, xr.DataArray])
     assert isinstance(actual.data, Array)
     assert_equal(actual, expected)
 
+
 def test_concat(arrays: tuple[xr.DataArray, xr.DataArray]) -> None:
     np_arr, xp_arr = arrays
     expected = xr.concat((np_arr, np_arr), dim="x")