0.11.27

astral-sh/uv0.11.27Jul 6, 2026by github-actions[bot]
AI Summary

Focuses on high-performance optimizations including SIMD-accelerated TOML parsing and caching improvements, alongside API stability updates for external tools like Pixi.
Key Highlights

Enable SIMD-accelerated TOML parsing
Cache default dependency markers when reading locks
Re-add `pub` APIs used in Pixi
Improve trace logs for unexpected error chains
New Features

Re-addition of `pub` APIs for external tool integration
Full Release Notes

## Release Notes

Released on 2026-07-06.

### Enhancements

- Continue on ignored errors when fetching wheel metadata ([#12255](https://github.com/astral-sh/uv/pull/12255))
- Use caching for `--python-downloads-json-url` ([#16749](https://github.com/astral-sh/uv/pull/16749))

### Preview features

- Discover extensionless shebang scripts in `uv workspace list --scripts` ([#20099](https://github.com/astral-sh/uv/pull/20099))

### Performance

- Avoid full site-packages scans for direct reinstalls ([#20119](https://github.com/astral-sh/uv/pull/20119))
- Avoid redundant pyproject parsing ([#20076](https://github.com/astral-sh/uv/pull/20076))
- Cache default dependency markers when reading locks ([#20125](https://github.com/astral-sh/uv/pull/20125))
- Enable SIMD-accelerated TOML parsing ([#20079](https://github.com/astral-sh/uv/pull/20079))
- Intern `requires-python` specifiers in Simple API parsing ([#20104](https://github.com/astral-sh/uv/pull/20104))
- Read cache entries into exact-sized buffers ([#20120](https://github.com/astral-sh/uv/pull/20120))
- Reduce VersionSpecifiers parsing allocations ([#20105](https://github.com/astral-sh/uv/pull/20105))
- Reduce site-packages scan allocation overhead ([#20087](https://github.com/astral-sh/uv/pull/20087))
- Reuse package names when parsing wheel filenames ([#20110](https://github.com/astral-sh/uv/pull/20110))
- Sort Simple API files after grouping ([#20112](https://github.com/astral-sh/uv/pull/20112))

### Bug fixes

- Always emit `packages` table for pylock.toml ([#20145](https://github.com/astral-sh/uv/pull/20145))
- Avoid blank line for empty `uv pip tree` ([#20062](https://github.com/astral-sh/uv/pull/20062))
- Encode hashes in file paths ([#19807](https://github.com/astral-sh/uv/pull/19807))
- Error on a registry uv.lock package without a version instead of panicking ([#19855](https://github.com/astral-sh/uv/pull/19855))
- Preserve conditional extra markers in exports ([#20148](https://github.com/astral-sh/uv/pull/20148))
- Skip the ambiguous authority check for file transport VCS URLs ([#20086](https://github.com/astral-sh/uv/pull/20086))
- Sync index format when `uv add --index` updates an existing index URL ([#19818](https://github.com/astral-sh/uv/pull/19818))

### Other changes

- Re-add `pub` APIs used in Pixi ([#20074](https://github.com/astral-sh/uv/pull/20074))
- Update Rust toolchain to 1.96.1 ([#20103](https://github.com/astral-sh/uv/pull/20103))

## Install uv 0.11.27

### Install prebuilt binaries via shell script

```sh
curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-installer.sh | sh
```

### Install prebuilt binaries via powershell script

```sh
powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-installer.ps1 | iex"
```

## Download uv 0.11.27

|  File  | Platform | Checksum |
|--------|----------|----------|
| [uv-aarch64-apple-darwin.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-aarch64-apple-darwin.tar.gz) | Apple Silicon macOS | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-aarch64-apple-darwin.tar.gz.sha256) |
| [uv-x86_64-apple-darwin.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-x86_64-apple-darwin.tar.gz) | Intel macOS | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-x86_64-apple-darwin.tar.gz.sha256) |
| [uv-aarch64-pc-windows-msvc.zip](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-aarch64-pc-windows-msvc.zip) | ARM64 Windows | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-aarch64-pc-windows-msvc.zip.sha256) |
| [uv-i686-pc-windows-msvc.zip](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-i686-pc-windows-msvc.zip) | x86 Windows | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-i686-pc-windows-msvc.zip.sha256) |
| [uv-x86_64-pc-windows-msvc.zip](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-x86_64-pc-windows-msvc.zip) | x64 Windows | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-x86_64-pc-windows-msvc.zip.sha256) |
| [uv-aarch64-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-aarch64-unknown-linux-gnu.tar.gz) | ARM64 Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-aarch64-unknown-linux-gnu.tar.gz.sha256) |
| [uv-i686-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-i686-unknown-linux-gnu.tar.gz) | x86 Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-i686-unknown-linux-gnu.tar.gz.sha256) |
| [uv-powerpc64le-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-powerpc64le-unknown-linux-gnu.tar.gz) | PPC64LE Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-powerpc64le-unknown-linux-gnu.tar.gz.sha256) |
| [uv-riscv64gc-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-riscv64gc-unknown-linux-gnu.tar.gz) | RISCV Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-riscv64gc-unknown-linux-gnu.tar.gz.sha256) |
| [uv-s390x-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-s390x-unknown-linux-gnu.tar.gz) | S390x Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-s390x-unknown-linux-gnu.tar.gz.sha256) |
| [uv-x86_64-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-x86_64-unknown-linux-gnu.tar.gz) | x64 Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-x86_64-unknown-linux-gnu.tar.gz.sha256) |
| [uv-armv7-unknown-linux-gnueabihf.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-armv7-unknown-linux-gnueabihf.tar.gz) | ARMv7 Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-armv7-unknown-linux-gnueabihf.tar.gz.sha256) |
| [uv-aarch64-unknown-linux-musl.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-aarch64-unknown-linux-musl.tar.gz) | ARM64 MUSL Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-aarch64-unknown-linux-musl.tar.gz.sha256) |
| [uv-i686-unknown-linux-musl.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-i686-unknown-linux-musl.tar.gz) | x86 MUSL Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-i686-unknown-linux-musl.tar.gz.sha256) |
| [uv-riscv64gc-unknown-linux-musl.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-riscv64gc-unknown-linux-musl.tar.gz) | RISCV MUSL Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-riscv64gc-unknown-linux-musl.tar.gz.sha256) |
| [uv-x86_64-unknown-linux-musl.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-x86_64-unknown-linux-musl.tar.gz) | x64 MUSL Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-x86_64-unknown-linux-musl.tar.gz.sha256) |
| [uv-arm-unknown-linux-musleabihf.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-arm-unknown-linux-musleabihf.tar.gz) | ARMv6 MUSL Linux (Hardfloat) | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-arm-unknown-linux-musleabihf.tar.gz.sha256) |
| [uv-armv7-unknown-linux-musleabihf.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-armv7-unknown-linux-musleabihf.tar.gz) | ARMv7 MUSL Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.11.27/uv-armv7-unknown-linux-musleabihf.tar.gz.sha256) |

## 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](https://cli.github.com/manual/gh_attestation_verify):
```sh
gh attestation verify <file-path of downloaded artifact> --repo astral-sh/uv
```

You can also download the attestation from [GitHub](https://github.com/astral-sh/uv/attestations) and verify against that directly:
```sh
gh attestation verify <file-path of downloaded artifact> --bundle <file-path of downloaded attestation>
```