app = FastAPI(on_startup=[app_startup], on_shutdown=[app_shutdown])

    @app.get("/")
    def main() -> dict[str, str]:
        return {"message": "Hello World"}

    def router_startup() -> None:
        state.router_startup = True

    def router_shutdown() -> None:
        state.router_shutdown = True

    router = APIRouter(on_startup=[router_startup], on_shutdown=[router_shutdown])

            )

        # Handle on_startup/on_shutdown locally since Starlette removed support
        # Ref: https://github.com/Kludex/starlette/pull/3117
        # TODO: deprecate this once the lifespan (or alternative) interface is improved
        self.on_startup: list[Callable[[], Any]] = (
            [] if on_startup is None else list(on_startup)
        )

## 0.128.6 (2026-02-09)

### Fixes

* 🐛 Fix `on_startup` and `on_shutdown` parameters of `APIRouter`. PR [#14873](https://github.com/fastapi/fastapi/pull/14873) by [@YuriiMotov](https://github.com/YuriiMotov).

### Translations