3.13.0

Features

• Added support for Python 3.14.

  Related issues and pull requests on GitHub:
  #10851, #10872.

• Added support for free-threading in Python 3.14+ -- by :user:kumaraditya303.

  Related issues and pull requests on GitHub:
  #11466, #11464.

• Added support for Zstandard (aka Zstd) compression
  -- by :user:KGuillaume-chaps.

  Related issues and pull requests on GitHub:
  #11161.

• Added StreamReader.total_raw_bytes to check the number of bytes downloaded
  -- by :user:robpats.

  Related issues and pull requests on GitHub:
  #11483.

Bug fixes

• Fixed pytest plugin to not use deprecated :py:mod:asyncio policy APIs.

  Related issues and pull requests on GitHub:
  #10851.

• Updated Content-Disposition header parsing to handle trailing semicolons and empty parts
  -- by :user:PLPeeters.

  Related issues and pull requests on GitHub:
  #11243.

• Fixed saved CookieJar failing to be loaded if cookies have partitioned flag when
  http.cookie does not have partitioned cookies supports. -- by :user:Cycloctane.

  Related issues and pull requests on GitHub:
  #11523.

Improved documentation

• Added Wireup to third-party libraries -- by :user:maldoinc.

  Related issues and pull requests on GitHub:
  #11233.

Packaging updates and notes for downstreams

• The blockbuster test dependency is now optional; the corresponding test fixture is disabled when it is unavailable
  -- by :user:musicinybrain.

  Related issues and pull requests on GitHub:
  #11363.

• Added riscv64 build to releases -- by :user:eshattow.

  Related issues and pull requests on GitHub:
  #11425.

Contributor-facing changes

• Fixed test_send_compress_text failing when alternative zlib implementation
  is used. (zlib-ng in python 3.14 windows build) -- by :user:Cycloctane.

  Related issues and pull requests on GitHub:
  #11546.

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