0.12.22 0.12.23

medium risk

astral-sh/uvOct 2, 2026 → Oct 3, 20262 days between releases

What's New

Adds Python 3.15.0rc3 and enables frozen lockfile preview features

New Features

  • Add CPython 3.15.0rc3
  • Enable operations from uv.lock without a workspace manifest using --frozen

Bug Fixes

  • Fix workspace member source rejection for conflicting dependency selections
  • Allow x86-64 Python interpreters under emulation on Windows ARM64

Upgrade Notes

Ensure your environment supports Python 3.15 if using it. The frozen lockfile feature is currently in preview and requires the --frozen flag.

The Two Releases

0.12.22

0.12.22

Oct 2, 2026· 20 days ago

Adds multiple Python versions (3.10.22 through 3.14.8), enhances workspace metadata recording in lockfiles, and reduces binary size.

Full release notes
0.12.23

0.12.23

Oct 3, 2026· 18 days ago

Adds CPython 3.15.0rc3 and enables direct operations from `uv.lock` without a workspace manifest using the `frozen-lockfile` preview feature.

Full release notes