uv 0.9.27

on Python PyPI

Release Notes

Released on 2026-01-26.

Python

• Upgrade Pyodide to 0.29.2 (#17652)
• Upgrade to GraalPy 25.0.2 (#17634)

Enhancements

• Add -t shortform for --target to uv pip subcommands (#17501)
• Add support for ROCm 7.0 and 7.1 accelerator backends (#17681)
• Further improve free-threading ABI incompatibility errors (#17491)
• Implement uv pip freeze --exclude flag (#17045)
• Improve warnings for --system and --no-system in uv venv (#17647)
• Make uv pip compile attempt to download a specified --python-version if it can. (#17249)
• Support Trusted Publishing with pyx (#17438)
• Fix JSON schema for exclude-newer-package (#17665)

Preview features

• Better detection for conflicting packages (#17623)
• Upgrade based on outdated build versions in uv python upgrade (#17653)

Bug fixes

• Change chocolatey system test to ensure uv uses the right python (#17533)
• Fix infinite loop when SSL_CERT_FILE is a directory (#17503)

Documentation

• Add cargo-xwin to the CONTRIBUTING guide (#17507)
• Fix typo in the documentation of UV_PUBLISH_INDEX (#17672)
• Move MSRV to platform support section (#17534)
• Update the testing instructions in the CONTRIBUTING guide (#17528)
• Use --locked to install cargo-xwin in guide (#17530)
• Warn about PyPy being unmaintained (#17643)
• docs: Correct gitlab-ci.yml to .gitlab-ci.yml (#17682)

Other changes

• Update MSRV to 1.91 (#17677)

Install uv 0.9.27

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/uv/releases/download/0.9.27/uv-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/uv/releases/download/0.9.27/uv-installer.ps1 | iex"

Download uv 0.9.27

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>