Changed

• Use a faster library to serialize float. Users with byte-exact regression
  tests should note positive exponents are now written using a +, e.g.,
  1.2e+30 instead of 1.2e30. Both formats are spec-compliant.
• ABI compatibility with CPython 3.15 alpha 5 free-threading.

Changed

• orjson now includes code licensed under the Mozilla Public License 2.0 (MPL-2.0).
• Drop support for Python 3.9.
• ABI compatibility with CPython 3.15 alpha 5.
• Build now depends on Rust 1.89 or later instead of 1.85.

Fixed

• Fix sporadic crash serializing deeply nested list of dict.

Changed

• Show simple error message instead of traceback when attempting to
  build on unsupported Python versions.

Changed

• ABI compatibility with CPython 3.15 alpha 1.
• Publish PyPI wheels for 3.14 and manylinux i686, manylinux arm7,
  manylinux ppc64le, manylinux s390x.
• Build now requires a C compiler.

Fixed

• Fix PyPI project metadata when using maturin 1.9.2 or later.

Fixed

• Fix build using Rust 1.89 on amd64.

Changed

• Build now depends on Rust 1.85 or later instead of 1.82.

Changed

• Publish PyPI wheels for CPython 3.14.

Fixed

• Fix str on big-endian architectures.

Changed

• Use a deserialization buffer allocated per request instead of a shared buffer allocated on import.
• ABI compatibility with CPython 3.14 beta 4.

Fixed

• Fix incorrect escaping of the vertical tabulation character. This was
  introduced in 3.10.17.

Changed

• Publish PyPI Windows aarch64/arm64 wheels.
• ABI compatibility with CPython 3.14 alpha 7.
• Fix incompatibility running on Python 3.13 using WASM.