diff --git a/xarray/namedarray/_typing.py b/xarray/namedarray/_typing.py
index 92d1c1dd8c0..3cab1b2067a 100644
--- a/xarray/namedarray/_typing.py
+++ b/xarray/namedarray/_typing.py
@@ -177,7 +177,7 @@ def __getitem__(
     ) -> _arrayfunction[Any, _DType_co] | Any: ...
 
     def __array__(
-        self, dtype: _dtype | None = ..., /
+        self, dtype: _dtype[_generic] | None = ..., /
     ) -> np.ndarray[Any, np.dtype[np.generic]]: ...
 
     # TODO: Should return the same subclass but with a new dtype generic.