# Uvicorn 0.46.0 — Version 0.46.0

- Product: Uvicorn (https://whatsnew.fyi/product/uvicorn)
- Vendor: Encode
- Date: 2026-04-23
- Version: 0.46.0
- Original notes: https://github.com/Kludex/uvicorn/releases/tag/0.46.0
- Permalink: https://whatsnew.fyi/product/uvicorn/releases/0.46.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Support `ws_max_size` in `wsproto` implementation
- **added** — Support `ws_ping_interval` and `ws_ping_timeout` in `wsproto` implementation
- **changed** — Use `bytearray` for incoming WebSocket message buffer in websockets-sansio

##### What's Changed
* Support `ws_max_size` in `wsproto` implementation by @Kludex in https://github.com/Kludex/uvicorn/pull/2915
* Support `ws_ping_interval` and `ws_ping_timeout` in `wsproto` implementation by @Kludex in https://github.com/Kludex/uvicorn/pull/2916
* Use `bytearray` for incoming WebSocket message buffer in websockets-sansio by @Kludex in https://github.com/Kludex/uvicorn/pull/2917


**Full Changelog**: https://github.com/Kludex/uvicorn/compare/0.45.0...0.46.0