0.27.0: replacing app=app with transport=ASGITransport(app) doesn't type check

[tamird]

 @pytest_asyncio.fixture
 async def deprecated_client(deprecated_db_manager: MainDbManager) -> AsyncGenerator[AsyncClient, None]:
     async with _make_mocked_test_app(db_manager=deprecated_db_manager, authorization=False) as app:
-        async with AsyncClient(app=app, base_url=URL, headers=USER_AGENT) as ac:
+        async with AsyncClient(transport=ASGITransport(app), base_url=URL, headers=USER_AGENT) as ac:
             yield ac

% poetry run mypy .                                              
tests/conftest.py:64: error: Argument 1 to "ASGITransport" has incompatible type "FastAPI"; expected "Callable[[dict[str, Any], Callable[[], Awaitable[dict[str, Any]]], Callable[[dict[str, Any]], Coroutine[None, None, None]]], Coroutine[None, None, None]]"  [arg-type]
tests/conftest.py:64: note: "FastAPI.__call__" has type "Callable[[Arg(MutableMapping[str, Any], 'scope'), Arg(Callable[[], Awaitable[MutableMapping[str, Any]]], 'receive'), Arg(Callable[[MutableMapping[str, Any]], Awaitable[None]], 'send')], Coroutine[Any, Any, None]]"
Found 1 error in 1 file (checked 472 source files)
 
 It looks like FastAPI and httpx disagree on the shape of an ASGI application. How am I meant to resolve this?