https://github.com/pandas-dev/pandas-stubs/pull/1462#discussion_r2490896286

Author: cmp0xff

pandas-stubs/core/arrays/datetimelike.pyi

@@ -25,6 +25,7 @@ from pandas._typing import (
     TimeNonexistent,
     TimeUnit,
     np_1darray,
+    np_ndarray_int64,
 )
 
 DTScalarOrNaT: TypeAlias = DatetimeLikeScalar | NaTType
@@ -64,7 +65,7 @@ class DatetimeLikeArrayMixin(ExtensionOpsMixin, ExtensionArray):
     def ravel(self, *args: Any, **kwargs: Any): ...
     def __iter__(self): ...
     @property
-    def asi8(self) -> np_1darray[Any]: ...
+    def asi8(self) -> np_ndarray_int64: ...
     @property
     def nbytes(self): ...
     def __array__(