Sourced from uvicorn's releases.

Version 0.47.0

What's Changed

• Eagerly import the ASGI app in the parent process by @​Kludex in Kludex/uvicorn#2919
• Add ssl_context_factory for custom SSLContext configuration by @​Kludex in Kludex/uvicorn#2920
• Treat fd=0 as a valid file descriptor with reload/workers by @​eltoder in Kludex/uvicorn#2927

Full Changelog: Kludex/uvicorn@0.46.0...0.47.0

Version 0.46.0

What's Changed

• Support ws_max_size in wsproto implementation by @​Kludex in Kludex/uvicorn#2915
• Support ws_ping_interval and ws_ping_timeout in wsproto implementation by @​Kludex in Kludex/uvicorn#2916
• Use bytearray for incoming WebSocket message buffer in websockets-sansio by @​Kludex in Kludex/uvicorn#2917

Full Changelog: Kludex/uvicorn@0.45.0...0.46.0

Version 0.45.0

What's Changed

• Preserve forwarded client ports in proxy headers middleware by @​Kludex in Kludex/uvicorn#2903
• Accept os.PathLike for log_config by @​Kludex in Kludex/uvicorn#2905
• Accept log_level strings case-insensitively by @​Kludex in Kludex/uvicorn#2907
• Raise helpful ImportError when PyYAML is missing for YAML log config by @​Kludex in Kludex/uvicorn#2906
• Revert empty context for ASGI runs by @​Kludex in Kludex/uvicorn#2911
• Add --reset-contextvars flag to isolate ASGI request context by @​Kludex in Kludex/uvicorn#2912
• Revert "Emit http.disconnect on server shutdown for streaming responses" (#2829) by @​Kludex in Kludex/uvicorn#2913

New Contributors

• @​Krishnachaitanyakc made their first contribution in Kludex/uvicorn#2870

Full Changelog: Kludex/uvicorn@0.44.0...0.45.0

Version 0.44.0

What's Changed

• Implement websocket keepalive pings for websockets-sansio by @​Kludex in Kludex/uvicorn#2888

Full Changelog: Kludex/uvicorn@0.43.0...0.44.0

Version 0.43.0

Changed

• Emit http.disconnect ASGI receive() event on server shutting down for streaming responses (#2829)
• Use native context parameter for create_task on Python 3.11+ (#2859)
• Drop cast in ASGI types (#2875)

---

Full Changelog: Kludex/uvicorn@0.42.0...0.43.0

... (truncated)

Sourced from uvicorn's changelog.

0.47.0 (May 14, 2026)

Added

• Add ssl_context_factory for custom SSLContext configuration (#2920)

Changed

• Eagerly import the ASGI app in the parent process (#2919)

Fixed

• Treat fd=0 as a valid file descriptor with reload/workers (#2927)

0.46.0 (April 23, 2026)

Added

• Support ws_max_size in wsproto implementation (#2915)
• Support ws_ping_interval and ws_ping_timeout in wsproto implementation (#2916)

Changed

• Use bytearray for incoming WebSocket message buffer in websockets-sansio (#2917)

0.45.0 (April 21, 2026)

Added

• Add --reset-contextvars flag to isolate ASGI request context (#2912)
• Accept os.PathLike for log_config (#2905)
• Accept log_level strings case-insensitively (#2907)

Changed

• Revert "Emit http.disconnect on server shutdown for streaming responses" (#2913)
• Revert "Explicitly start ASGI run with empty context" (#2911)

Fixed

• Preserve forwarded client ports in proxy headers middleware (#2903)
• Raise helpful ImportError when PyYAML is missing for YAML log config (#2906)

0.44.0 (April 6, 2026)

Added

• Implement websocket keepalive pings for websockets-sansio (#2888)

0.43.0 (April 3, 2026)

... (truncated)

• 479a2c0 Version 0.47.0 (#2937)
• 89347fd Add 7-day cooldown for dependency resolution via uv exclude-newer (#2936)
• 767315b Drop unused contents/actions permissions from zizmor workflow (#2935)
• f25ee43 chore(deps): bump urllib3 from 2.6.3 to 2.7.0 (#2933)
• 8782666 Fix typo in docs/deployment/index.md. (#2932)
• ad5ff87 Treat fd=0 as a valid file descriptor with reload/workers (#2927)
• 6761b2c Remove Hugging Face sponsor block from docs (#2923)
• 438f648 Surface sponsors on welcome page and sidebar (#2921)
• 10ddc6d Add ssl_context_factory for custom SSLContext configuration (#2920)
• b499bc4 Eagerly import the ASGI app in the parent process (#2919)
• Additional commits viewable in compare view