diff --git a/stubs/aiofiles/aiofiles/base.pyi b/stubs/aiofiles/aiofiles/base.pyi
index ea79abf48..1de0bbbfd 100644
--- a/stubs/aiofiles/aiofiles/base.pyi
+++ b/stubs/aiofiles/aiofiles/base.pyi
@@ -8,7 +8,7 @@ _T = TypeVar("_T")
 _V_co = TypeVar("_V_co", covariant=True)
 
 class AsyncBase(Generic[_T]):
-    def __init__(self, file: str, loop: Any, executor: Any) -> None: ...
+    def __init__(self, file: TextIO | BinaryIO | None, loop: Any, executor: Any) -> None: ...
     def __aiter__(self) -> Self: ...
     async def __anext__(self) -> _T: ...