diff --git a/great_tables/_locations.py b/great_tables/_locations.py
index 8e91ef449..0be395e8f 100644
--- a/great_tables/_locations.py
+++ b/great_tables/_locations.py
@@ -28,7 +28,7 @@
 # Misc Types ===========================================================================
 
 PlacementOptions: TypeAlias = Literal["auto", "left", "right"]
-RowSelectExpr: TypeAlias = 'list[int] | PlExpr | Callable[["TblData"], bool] | None'
+RowSelectExpr: TypeAlias = 'list[int] | int | PlExpr | Callable[["TblData"], bool] | None'
 
 # Locations ============================================================================
 # TODO: these are called cells_* in gt. I prefixed them with Loc just to keep things