* ⬆️ Upgrade Black. PR [#9661](https://github.com/tiangolo/fastapi/pull/9661) by [@tiangolo](https://github.com/tiangolo).
### Features
* ✨ Add support for `dependencies` in WebSocket routes. PR [#4534](https://github.com/tiangolo/fastapi/pull/4534) by [@paulo-raca](https://github.com/paulo-raca).
* ✨ Add exception handler for `WebSocketRequestValidationError` (which also allows to override it). PR [#6030](https://github.com/tiangolo/fastapi/pull/6030) by [@kristjanvalur](https://github.com/kristjanvalur).
### Refactors
* ⬆️ Upgrade and fully migrate to Ruff, remove isort, includes a couple of tweaks suggested by the new version of Ruff. PR [#9660](https://github.com/tiangolo/fastapi/pull/9660) by [@tiangolo](https://github.com/tiangolo).
* ⬆️ Upgrade and fully migrate to Ruff, remove isort, includes a couple of tweaks suggested by the new version of Ruff. PR [#9660](https://github.com/tiangolo/fastapi/pull/9660) by [@tiangolo](https://github.com/tiangolo).
* ♻️ Update internal type annotations and upgrade mypy. PR [#9658](https://github.com/tiangolo/fastapi/pull/9658) by [@tiangolo](https://github.com/tiangolo).
* ♻️ Update internal type annotations and upgrade mypy. PR [#9658](https://github.com/tiangolo/fastapi/pull/9658) by [@tiangolo](https://github.com/tiangolo).
* 💚 Update CI cache to fix installs when dependencies change. PR [#9659](https://github.com/tiangolo/fastapi/pull/9659) by [@tiangolo](https://github.com/tiangolo).
* ♻️ Simplify `AsyncExitStackMiddleware` as without Python 3.6 `AsyncExitStack` is always available. PR [#9657](https://github.com/tiangolo/fastapi/pull/9657) by [@tiangolo](https://github.com/tiangolo).
* ♻️ Simplify `AsyncExitStackMiddleware` as without Python 3.6 `AsyncExitStack` is always available. PR [#9657](https://github.com/tiangolo/fastapi/pull/9657) by [@tiangolo](https://github.com/tiangolo).
### Upgrades
* ⬆️ Upgrade Black. PR [#9661](https://github.com/tiangolo/fastapi/pull/9661) by [@tiangolo](https://github.com/tiangolo).
### Internal
* 💚 Update CI cache to fix installs when dependencies change. PR [#9659](https://github.com/tiangolo/fastapi/pull/9659) by [@tiangolo](https://github.com/tiangolo).
* ⬇️ Separate requirements for development into their own requirements.txt files, they shouldn't be extras. PR [#9655](https://github.com/tiangolo/fastapi/pull/9655) by [@tiangolo](https://github.com/tiangolo).
* ⬇️ Separate requirements for development into their own requirements.txt files, they shouldn't be extras. PR [#9655](https://github.com/tiangolo/fastapi/pull/9655) by [@tiangolo](https://github.com/tiangolo).
* ✨ Add support for `dependencies` in WebSocket routes. PR [#4534](https://github.com/tiangolo/fastapi/pull/4534) by [@paulo-raca](https://github.com/paulo-raca).
* ✨ Add exception handler for `WebSocketRequestValidationError` (which also allows to override it). PR [#6030](https://github.com/tiangolo/fastapi/pull/6030) by [@kristjanvalur](https://github.com/kristjanvalur).