Sourced from uvicorn's releases.

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: https://github.com/Kludex/uvicorn/compare/0.44.0...0.45.0

Sourced from uvicorn's changelog.

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)

• 2c423bd Version 0.45.0 (#2914)
• 7f027f8 Revert "Emit http.disconnect on server shutdown for streaming responses" (#...
• 73a80c3 Add --reset-contextvars flag to isolate ASGI request context (#2912)
• 45c0b56 Revert empty context for ASGI runs (#2911)
• 850d926 Raise helpful ImportError when PyYAML is missing for YAML log config (#2906)
• fdcacb4 Accept log_level strings case-insensitively (#2907)
• 70f247f Accept os.PathLike for log_config (#2905)
• 18edfa7 Preserve forwarded client ports in proxy headers middleware (#2903)
• 77843e0 Stabilize websocket keepalive ping test (#2904)
• 3703339 chore(deps-dev): bump pytest from 9.0.2 to 9.0.3 (#2902)
• Additional commits viewable in compare view

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