astral-sh/uv 0.13.6

on GitHub

Release Notes

Released on 2026-10-26.

Enhancements

• Accept an empty UV_RUN_RECURSION_DEPTH as zero and report invalid values consistently (#22814)
• Explain how to add project metadata when uv init finds a pyproject.toml without a [project] table (#22916)

Python

• Add CPython 3.11.18, 3.12.16, 3.13.18, 3.14.10, and 3.15.2 (#22938)

Preview features

• Detect NVIDIA GPU capabilities when selecting compatible wheel variants with wheel-variants (#22690)
• Nest each module's owners in an object in uv workspace metadata output (#22638)
• Report the unsupported properties required by an incompatible wheel variant (#22719)

Performance

• Reduce peak memory use when resolving large workspaces (#22860, #22863, #22864, #22866, #22870)
• Reduce peak memory use when locking or upgrading large projects (#22833, #22834)
• Speed up redirected output from uv export and uv pip compile (#22840)
• Reuse cached or active environments when running PEP 723 scripts without dependencies (#21458)
• Reduce parsing overhead for build dependency and build backend settings (#22848, #22871, #22879, #22884)
• Reduce parsing overhead for project sources and workspace references (#22880, #22883)
• Reduce parsing overhead for cache, exclusion, cutoff, and preview settings (#22876, #22877, #22878, #22887)
• Reduce PyPI metadata parsing overhead (#22874, #22875)
• Speed up parsing tool receipt requirements (#22885)

Bug fixes

• Prevent uv run --active --script and uv sync --active --script from deleting non-virtual-environment directories (#21464)
• Use AMD64 for platform_machine when resolving for x86-64 Windows (#22935)
• Preserve free-threaded and other non-default variants in uv python upgrade (#22836)
• Allow uv init --no-package and uv init --script when UV_INIT_BUILD_BACKEND is set (#22907)
• Prevent panics when rendering containment markers with local versions (#22815)

Documentation

• Update the Docker guide and reproduction examples to use uv 0.13.5 (#22867)

Install uv 0.13.6

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/uv/releases/download/0.13.6/uv-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/uv/releases/download/0.13.6/uv-installer.ps1 | iex"

Download uv 0.13.6

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>