v2.5.3: Python 3.14 support via updated cloudpickle

Generated notes (2026-03-23 12:38)

Python 3.14 support via updated cloudpickle

Features

• Add Python 3.14 compatibility by updating vendored cloudpickle to 3.1.2

v2.5.2: Build wheels for Python 3.14

release-v2.5.2

Fix config

v2.5.1: Wheels for Linux ARM

Now that Github have runners for Linux ARM, we can build wheels for that again 🎉

v2.5.0: Update msgpack to v1.1.0, support Python 3.13

• Update vendored msgpack-python to v1.1.0
• Update build system and support Python 3.13
• Update metadata to accurately reflect Python version ranges

v2.4.8

• Updates for Python 3.12 support (#102).
• Add Python 3.12 wheels.

v2.4.7

• Restrict to Cython 0.29.x due to incompatibilities with Cython 3.

v1.0.7

• Port ultrajson/ultrajson#550 and ultrajson/ultrajson#555 to fix incorrect handling of invalid surrogate pair characters (CVE-2022-31116)
• Port ultrajson/ultrajson#519 to fix buffer overflows (CVE-2021-4595)

v2.4.6

• Fix typing for JSONInput and JSONInputBin (#79).
• Add read_gzip_jsonl and write_gzip_jsonl (#84).

v2.4.5

• Update to cloudpickle v2.2.0 for Python 3.11 support.
• Add Python 3.11 wheels.

v1.0.6

• Drop support for Python 3.5 and earlier.
• Update to cloudpickle v2.2.0 for Python 3.11 support.
• Add Python 3.11 wheels.