Release Notes

Released on 2026-07-06.

Enhancements

• Continue on ignored errors when fetching wheel metadata (#12255)
• Use caching for --python-downloads-json-url (#16749)

Preview features

• Discover extensionless shebang scripts in uv workspace list --scripts (#20099)

Performance

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

Bug fixes

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

Other changes

• Re-add pub APIs used in Pixi (#20074)
• Update Rust toolchain to 1.96.1 (#20103)

Install uv 0.11.27

Install prebuilt binaries via shell script

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

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	Apple Silicon macOS	checksum
uv-x86_64-apple-darwin.tar.gz	Intel macOS	checksum
uv-aarch64-pc-windows-msvc.zip	ARM64 Windows	checksum
uv-i686-pc-windows-msvc.zip	x86 Windows	checksum
uv-x86_64-pc-windows-msvc.zip	x64 Windows	checksum
uv-aarch64-unknown-linux-gnu.tar.gz	ARM64 Linux	checksum
uv-i686-unknown-linux-gnu.tar.gz	x86 Linux	checksum
uv-powerpc64le-unknown-linux-gnu.tar.gz	PPC64LE Linux	checksum
uv-riscv64gc-unknown-linux-gnu.tar.gz	RISCV Linux	checksum
uv-s390x-unknown-linux-gnu.tar.gz	S390x Linux	checksum
uv-x86_64-unknown-linux-gnu.tar.gz	x64 Linux	checksum
uv-armv7-unknown-linux-gnueabihf.tar.gz	ARMv7 Linux	checksum
uv-aarch64-unknown-linux-musl.tar.gz	ARM64 MUSL Linux	checksum
uv-i686-unknown-linux-musl.tar.gz	x86 MUSL Linux	checksum
uv-riscv64gc-unknown-linux-musl.tar.gz	RISCV MUSL Linux	checksum
uv-x86_64-unknown-linux-musl.tar.gz	x64 MUSL Linux	checksum
uv-arm-unknown-linux-musleabihf.tar.gz	ARMv6 MUSL Linux (Hardfloat)	checksum
uv-armv7-unknown-linux-musleabihf.tar.gz	ARMv7 MUSL Linux	checksum

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>