astral-sh/uv 0.9.26

on GitHub

Release Notes

Released on 2026-01-15.

Python

• Add CPython 3.15.0a5

Enhancements

• Add a hint to update uv when a managed Python download is not found (#17461)
• Improve cache initialization failure error message (#17469)
• Improve error message for abi3 wheels on free-threaded Python (#17442)
• Add support for --no-sources-package (#14910)

Preview features

• Add METADATA.json and WHEEL.json in uv build backend (#15510)
• Add support for GCS request signing (#17474)
• Adjust the process ulimit to the maximum allowed on startup (#17464)

Bug fixes

• Lock to avoid concurrent refresh of pyx tokens (#17479)

Documentation

• Add linting and formatting instructions to the CONTRIBUTING guide (#17470)
• Avoid rendering pyproject.toml examples for more system-level settings (#17462)

Install uv 0.9.26

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/uv/releases/download/0.9.26/uv-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/uv/releases/download/0.9.26/uv-installer.ps1 | iex"

Download uv 0.9.26

Verifying GitHub Artifact Attestations

The artifacts in this release have attestations generated with GitHub Artifact Attestations. These can be verified by using the GitHub CLI:

gh attestation verify <file-path of downloaded artifact> --repo astral-sh/uv

You can also download the attestation from GitHub and verify against that directly:

gh attestation verify <file-path of downloaded artifact> --bundle <file-path of downloaded attestation>