uvReleasedpatch

uv 0.13.1 is out: highlights and upgrade guide

By VersionUpdates Editorial · Published Oct 14, 2026 · 3 min read

At a glance

uv 0.13.1 is a patch release published on Oct 14, 2026. It follows uv 0.13.0 by 5 days. It includes 21 listed changes.

Ignore Requires-Python upper bounds in uv pip check and uv pip install --strict, consistent with resolution
Support Linux SPARC by falling back when filesystem cloning and detailed cache accounting are unavailable
Report missing trusted hashes in resolution errors
Add CPython 3.16.0a1
Add preliminary support for parsing PEP 825 variant labels in wheel filenames with wheel-variants

Version: 0.13.1
Released: Oct 14, 2026
Release type: Patch
Previous: 0.13.0
Changes listed: 21
License: Apache-2.0

How to upgrade to uv 0.13.1

This is a patch release, normally bug fixes only. It is usually safe to upgrade after your tests pass.

uv self update 0.13.1

What's included in uv 0.13.1

Details from the official release page.

Enhancements

Ignore Requires-Python upper bounds in uv pip check and uv pip install --strict, consistent with resolution (#22500)
Support Linux SPARC by falling back when filesystem cloning and detailed cache accounting are unavailable (#22463)
Report missing trusted hashes in resolution errors (#22241)

Python

Add CPython 3.16.0a1 (#22527)

Preview features

Add preliminary support for parsing PEP 825 variant labels in wheel filenames with wheel-variants (#22039)

Performance

Reduce uv's binary size (#22429, #22430, #22432)
Speed up Simple API parsing (#22429)
Reduce package metadata parsing overhead (#22239)

Bug fixes

Prevent tool and managed Python uninstalls from deleting unrelated files beside their storage directories (#22495)
Restore support for source distributions containing hard links or full-length tar user or group names (#22516, #22522)
Preserve device files and FIFOs used as uv pip compile or uv export output destinations (#22496)
Fix sys._base_executable detection for environments created from symlinked interpreters (#22520)
Prevent concurrent readers from observing partially written lockfiles, Python version files, or managed Python sysconfig files (#22399, #22402, #22403)
Serialize concurrent project commands that reach the same environment through real and symlinked paths (#22390)
Prevent installs, syncs, and environment creation from failing when they race with uv cache clean (#22387)
Prevent concurrent tool installations from corrupting an environment when the last tool is uninstalled (#22391)
Persist changed upgrade settings even when uv tool upgrade leaves the tool version unchanged (#22499)
Reuse environments with installed Git dependencies pinned to full commit hashes without resolving again (#22464)

Documentation

Explain how to select an emulated Python interpreter on Windows ARM64 when native wheels are unavailable (#22424)
Fix the .netrc format documentation link (#22514)

Other changes

Publish Python 3.15-based uv Docker images under stable tags (#22503)

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:

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

uv 0.13.1 FAQ

When was uv 0.13.1 released?

uv 0.13.1 was published on Oct 14, 2026.

Is uv 0.13.1 a major update?

No. It is a patch release, mainly bug fixes.

How do I upgrade to uv 0.13.1?

Use the commands in the “How to upgrade” section, then run your test suite.

Where are the official uv 0.13.1 notes?

On the project's official release page: https://github.com/astral-sh/uv/releases/tag/0.13.1

Source: official uv 0.13.1 release. Spotted an error? Tell us.