astral-sh/uv 0.11.9

on GitHub

Release Notes

Released on 2026-05-04.

Note due to a timeout publishing to crates.io, the GitHub portion of this release was published manually by a maintainer using the artifacts built in CI. Consequently, GitHub attestations will not be available. Additionally, this release will not be fully published to crates.io. There should be no other effects.

Python 3.14.5 release candidate

This release includes a special release candidate for the next Python 3.14 patch release. Python 3.14 included a new garbage collection implementation, which reduced pause times but caused significant unexpected memory pressure in production environments. In 3.14.5 and 3.15, the previous garbage collection implementation will be restored.

We would greatly appreciate if you tested the 3.14.5rc1 version included in this release. The stable version is expected to be released soon and any feedback on potential issues would be helpful to the Python development team.

For more context, see the announcement, issue, and pull request.

Issues with the new release can be reported in the uv or CPython issue trackers.

Python

• Upgrade PyPy to v7.3.22
• Add CPython 3.14.5rc1
• On macOS, CPython statically links libpython to match Linux

Enhancements

• Omit compatible release desugaring for pre-release hints (#19267)
• Fix file locks on Android (#18323)

Preview

• uv audit add reporting for adverse project statuses (#19128)

Bug fixes

• Discover versioned Python executables when requires-python pins a version (#18700)
• Fix URL prefix matching to require path boundaries (#19154)
• Fix transitive Git path dependencies in lockfiles (#19269)
• Handle incorrect unlock error in LockedFile::drop on Wine (#19229)
• Prevent uninstalling site-packages for empty top_level.txt in .egg-info (#19114)
• Use symlinks instead of junctions on Wine (#19213)
• Fix floating-point environment handling on ARMv7 (#19157)
• Redact credentials from remote requirements URL in offline errors (#19216)
• Windows tramplolines no longer set PYTHONHOME and only set __PYVENV_LAUNCHER__ for virtual environments (#19199)

Documentation

• Mark --native-tls and UV_NATIVE_TLS as deprecated (#18705)
• Re-add pytorch-triton-rocm to PyTorch ROCm docs (#19241)
• Tweak changelog entries for 0.11.8 (#19188)
• Add 'Exporting lockfiles' to the Concepts->Projects index (#19209)
• Clarify that uv init creates git files / folders in the projects guide (#19183)

Install uv 0.11.9

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/uv/releases/download/0.11.9/uv-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/uv/releases/download/0.11.9/uv-installer.ps1 | iex"

Download uv 0.11.9

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>