diff --git a/stdlib/tkinter/ttk.pyi b/stdlib/tkinter/ttk.pyi
index 5e581daf7..17aa24197 100644
--- a/stdlib/tkinter/ttk.pyi
+++ b/stdlib/tkinter/ttk.pyi
@@ -938,9 +938,9 @@ class Treeview(Widget, tkinter.XView, tkinter.YView):
     def prev(self, item): ...
     def see(self, item): ...
     if sys.version_info >= (3, 8):
-        def selection(self) -> List[Any]: ...
+        def selection(self) -> Tuple[str, ...]: ...
     else:
-        def selection(self, selop: Optional[Any] = ..., items: Optional[Any] = ...) -> List[Any]: ...
+        def selection(self, selop: Optional[Any] = ..., items: Optional[Any] = ...) -> Tuple[str, ...]: ...
     def selection_set(self, items): ...
     def selection_add(self, items): ...
     def selection_remove(self, items): ...