diff --git a/pytools/__init__.py b/pytools/__init__.py
index 0bbcf44e..09e1eacd 100644
--- a/pytools/__init__.py
+++ b/pytools/__init__.py
@@ -1144,7 +1144,7 @@ def set_sum(set_iterable):
     return reduce(or_, set_iterable, set())
 
 
-def div_ceil(nr, dr):
+def div_ceil(nr: int, dr: int):
     return -(-nr // dr)
 
 
diff --git a/pytools/obj_array.py b/pytools/obj_array.py
index 9dc188ff..75382a86 100644
--- a/pytools/obj_array.py
+++ b/pytools/obj_array.py
@@ -152,6 +152,9 @@ def __len__(self) -> int: ...
         @property
         def size(self) -> int: ...
 
+        @property
+        def T(self) -> Self: ...  # noqa: N802
+
         @overload
         def __getitem__(self, x: ShapeT, /) -> T: ...