uv 0.10.3

on Python PyPI

Release Notes

Released on 2026-02-16.

Python

• Add CPython 3.15.0a6

Enhancements

• Don't open file locks for writing (#17956)
• Make Windows trampoline error messages consistent with uv proper (#17969)
• Log which preview features are enabled (#17968)

Preview features

• Add support for ruff version constraints and exclude-newer in uv format (#17651)
• Fix script path handling when target-workspace-discovery is enabled (#17965)
• Use version constraints to select the default ruff version used by uv format (#17977)

Bug fixes

• Avoid matching managed Python versions by prefixes, e.g. don't match CPython 3.10 when cpython-3.1 is specified (#17972)
• Fix handling of --allow-existing with minor version links on Windows (#17978)
• Fix panic when encountering unmanaged workspace members (#17974)
• Improve accuracy of request timing (#18007)
• Reject u64::MAX in version segments to prevent overflow (#17985)

Documentation

• Reference Debian Trixie instead of Bookworm (#17991)

Install uv 0.10.3

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/uv/releases/download/0.10.3/uv-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/uv/releases/download/0.10.3/uv-installer.ps1 | iex"

Download uv 0.10.3

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>