⬆️ [renovate] Update Python dependencies

Renovate 2026requested to merge
renovate/python-python-dependencies into main

This MR contains the following updates:

Package Change Age Confidence
fastapi (changelog) ==0.141.0 → ==0.141.1 age confidence
ty (changelog) ==0.0.64 → ==0.0.66 age confidence
uvicorn (changelog) ==0.52.0 → ==0.52.1 age confidence

Release Notes

fastapi/fastapi (fastapi)

v0.141.1

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Fixes
  • 🐛 Fix support for background tasks and headers from dependencies in app.frontend(). MR #​16105 by @​tiangolo.
Docs
astral-sh/ty (ty)

v0.0.66

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Released on 2026-08-03.

LSP server
  • Index with-statement targets as symbols (#​27256)
  • Trigger signature help after completing callable with parentheses (#​27084)
Library support
  • Pydantic: Recognize models installed on extra search paths (#​27429)
Diagnostics
  • Detect __aenter__ and __aexit__ that do not return awaitables (#​27414)
  • Diagnose dataclass fields after inherited defaults (#​27327)
  • Emit diagnostic when specializing a non-generic class (#​26883)
  • Improve error context for incompatible callable signatures (#​27422)
  • Preserve forwarded expanded-variadic diagnostic sources (#​27266)
Core type checking
  • Avoid over-materializing user-defined TypeIs return types (#​26864)
  • Fix enum class container assignability (#​27318)
  • Hide stub-only helpers from implicit builtin lookup (#​27423)
  • Move Unknown out of the experimental ty_extensions API (#​27430)
  • Preserve TypeVarTuple context during Generic recovery (#​27381)
  • Preserve exact numeric types in covariant collections (#​27311)
  • Reject ClassVar and Final qualifiers in NamedTuple fields (#​27380)
  • Reject out-of-scope ParamSpec components (#​27378)
  • Reject specializing non-generic subclasses (#​27377)
  • Respect bounds and constraints in generic materializations (#​27228)
  • Sync vendored typeshed stubs (#​27401). Typeshed diff
Contributors

v0.0.65

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Released on 2026-07-29.

LSP server
  • Support comprehension walruses in IDE features (#​26476)
Library support
  • Pydantic: Allow mutation of private attributes on frozen models (#​27257)
  • Pydantic: Synthesize __replace__ for models (#​27220)
Diagnostics
  • Correct ParamSpec forwarded-argument diagnostic locations (#​27263)
  • Recover forwarded callable object and constructor sources (#​27264)
  • Recover forwarded functools.partial diagnostic sources (#​27265)
Core type checking
  • Fix gradual class assignability with generic receivers (#​27223)
  • Lazily materialize protocol attributes (#​27267)
  • Narrow tagged unions through all type kinds (#​27226)
  • Prefer static constrained TypeVar solutions (#​27057)
  • Preserve frozen-dataclass setter delegation (#​27217)
  • Preserve inference when filtering constructor overloads (#​27254)
  • Reject frozen-dataclass field deletion through subclasses (#​27001)
  • Stabilize recursive type-constraint ordering (#​27176)
  • Support materialized class type expressions (#​27258)
Performance
  • Avoid quadratic inference for large literal unions (#​27178)
  • Cache protocol receiver binding (#​27301)
Contributors
Kludex/uvicorn (uvicorn)

v0.52.1: Version 0.52.1

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Fixed
  • Complete the closing handshake on server-initiated WebSocket closes in the websockets-sansio and wsproto implementations, waiting for the client's close reply with a 10 second timeout instead of resetting the connection (#​3053)
  • Add missing write flow control to the websockets-sansio implementation, preventing data truncation on server-initiated closes with large in-flight payloads (#​3048)
  • Handle connection loss while a WebSocket write is waiting on backpressure (#​3050)
  • Remove duplicate Content-Type and Content-Length headers from WebSocket denial responses on the websockets-sansio implementation, and deliver non-UTF-8 denial bodies intact (#​3041)

Full Changelog: https://github.com/Kludex/uvicorn/compare/0.52.0...0.52.1

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Edited by Renovate 2026

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