Security is very important for FastAPI and its community. 🔒

Learn more about it below. 👇

## Versions

The latest version of FastAPI is supported.

You are encouraged to [write tests](https://fastapi.tiangolo.com/tutorial/testing/) for your application and update your FastAPI version frequently after ensuring that your tests are passing. This way you will benefit from the latest features, bug fixes, and **security fixes**.

from docs_src.dependency_testing.tutorial001 import (
    app,
    client,
    test_override_in_items,
    test_override_in_items_with_params,
    test_override_in_items_with_q,
)


def test_override_in_items_run():
    test_override_in_items()


def test_override_in_items_with_q_run():
    test_override_in_items_with_q()


def test_override_in_items_with_params_run():
    test_override_in_items_with_params()

from docs_src.app_testing.app_b import test_main


def test_app():
    test_main.test_create_existing_item()
    test_main.test_create_item()
    test_main.test_create_item_bad_token()
    test_main.test_read_nonexistent_item()
    test_main.test_read_item()

from ...utils import needs_py39


@needs_py39
def test_app():
    from docs_src.app_testing.app_b_an_py39 import test_main

    test_main.test_create_existing_item()
    test_main.test_create_item()
    test_main.test_create_item_bad_token()
    test_main.test_read_nonexistent_item()
    test_main.test_read_item()

## Actualizando las versiones de FastAPI

Para esto es recomendable primero añadir tests a tu aplicación.

Con **FastAPI** es muy fácil (gracias a Starlette), revisa la documentación [Testing](../tutorial/testing.md){.internal-link target=_blank}

Luego de tener los tests, puedes actualizar la versión de **FastAPI** a una más reciente y asegurarte de que tu código funciona correctamente ejecutando los tests.

## Upgrade der FastAPI-Versionen

Sie sollten Tests für Ihre Anwendung hinzufügen.

Mit **FastAPI** ist das sehr einfach (dank Starlette), schauen Sie sich die Dokumentation an: [Testen](../tutorial/testing.md){.internal-link target=_blank}

client = TestClient(app)


def get_settings_override():
    return Settings(admin_email="testing******@****.***")


app.dependency_overrides[get_settings] = get_settings_override


def test_app():
    response = client.get("/info")
    data = response.json()
    assert data == {
        "app_name": "Awesome API",
        "admin_email": "testing******@****.***",
        "items_per_user": 50,

All in a way that provided the best development experience for all the developers.

## Requirements

After testing several alternatives, I decided that I was going to use <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">**Pydantic**</a> for its advantages.

## Обновление версий FastAPI

Вам следует добавить тесты для вашего приложения.

С помощью **FastAPI** это очень просто (благодаря Starlette), см. документацию: [Тестирование](../tutorial/testing.md){.internal-link target=_blank}

После создания тестов вы можете обновить свою версию **FastAPI** до более новой. После этого следует убедиться, что ваш код работает корректно, запустив тесты.

## Atualizando as versões do FastAPI

Você deve adicionar testes para a sua aplicação.

Com **FastAPI** isso é muito fácil (graças a Starlette), verifique a documentação: [Testing](../tutorial/testing.md){.internal-link target=\_blank}

Após a criação dos testes, você pode atualizar a sua versão do **FastAPI** para uma mais recente, execute os testes para se certificar de que todo o seu código está funcionando corretamente.