v0.11.29

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Released on 2026-07-15.

Python

• Use gzip-compressed artifacts for PyPy downloads (#​20265)

Enhancements

• Add JSON output to uv tree (#​19978)
• Add CUDA 13.2 as a supported PyTorch backend (#​20267)
• Prefer local artifacts over URLs when installing from pylock.toml (#​20393)
• Clarify diagnostics for unsatisfiable direct requirement ranges (#​20227)
• Include the selected project name in missing-extra errors (#​20358)

Preview features

• Preserve extras and dependency-group conflict context when selecting locked project tools (#​20078)
• Split OSV audit queries that exceed the service's 1,000-package limit (#​20398)
• Apply OSV fixed-version information only to the matching package and ecosystem (#​20399)
• Skip the virtualenv distutils monkeypatch on Python 3.10 and later (#​20222)
• Report invalid uv audit --service-url values instead of panicking (#​20374)
• Include preview settings in the published SchemaStore schema (#​20304)

Performance

• Reduce resolver work by widening selected versions across ranges without other known candidates (#​20115)
• Defer client and build setup for no-op uv sync operations (#​20364)
• Reuse workspace discovery during frozen syncs (#​20363)
• Reuse workspace discovery after resolving settings (#​20356)
• Reuse workspace discovery in uv tree, uv export, uv format, and uv audit (#​20359)
• Avoid cache and interpreter setup when reading a project version (#​20360)

Bug fixes

• Reject duplicate active package entries in pylock.toml (#​20391)
• Preserve direct-archive hashes in uv pip freeze output (#​20395)
• Explain conflicting root requirements instead of displaying an empty version range (#​20228)
• Prevent build-backend data paths from escaping the project or bypassing wheel exclusions (#​20397)
• Reject PEP 517 backend paths outside the source tree, including paths that escape through symlinks (#​20387)
• Redact credentials from failed Git fetch commands (#​20401)
• Fix exclusive post-release range ordering to match PEP 440 (#​20268)
• Canonicalize equivalent PEP 440 ranges during dependency resolution (#​20182)
• Honor Python version pins when initializing scripts (#​20404)
• Respect package-scoped source filtering for scripts (#​20389)
• Report existing environment incompatibilities when uv pip install --strict has nothing to install (#​20388)
• Continue scanning platlib when purelib is missing (#​20405)
• Handle versionless .egg-info files as legacy package metadata (#​20403)
• Make repeated locking idempotent for impossible cross-variable platform markers (#​20369)
• Report invalid cloud credential endpoint URLs instead of panicking (#​20372)
• Report invalid pylock.toml artifact URLs instead of panicking (#​20373)
• Report non-UTF-8 virtual environment paths instead of panicking while generating activation scripts (#​20375)
• Return an unsupported-operation error from unimplemented build-backend requirement hooks (#​20376)

Documentation

• Clarify --no-build behavior for editable requirements (#​20234)
• Document uv's threat model (#​20236)
• Reduce the number of badges in the README (#​11257)

v0.11.28

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Released on 2026-07-07.

Security

This release updates our ZIP library, astral-async-zip, to v0.0.20, which includes 15 changes that harden our ZIP handling against parser differentials. uv may reject ZIP archives with malformed or ambiguous content that were previously accepted.

See the upstream commits for a full list of changes.

Python

• Upgrade GraalPy to 25.1.3 (#​20069)

Enhancements

• Improve trace logs for unexpected error chains (#​20220)
• Move lockfile update guidance to a hint (#​20219)
• Preserve indentation for multiline error causes (#​20156)
• Render user errors with their cause chains (#​20217)
• Route final command errors through the printer to respect -q and -qq (#​20163)
• Use standard rendering for uv build errors (#​20159)
• Use standard rendering for tool requirement errors (#​20160)

Performance

• Only compile bytecode for installed distributions in uv pip install (#​19914)
• Avoid allocating URL-safe Git revisions (#​20194)
• Avoid allocating canonical Python request strings (#​20193)
• Avoid allocating custom Astral mirror URLs (#​20204)
• Avoid allocating expanded compatibility tags (#​20190)
• Avoid allocating shell strings that need no escaping (#​20196)
• Avoid allocating static ABI descriptions (#​20201)
• Avoid allocating static Windows executable names (#​20200)
• Avoid allocating static dependency table names (#​20199)
• Avoid allocating static platform triple components (#​20195)
• Avoid allocating static resolver report labels (#​20198)
• Avoid allocating static unavailable-version messages (#​20197)
• Avoid allocating unchanged Python download architectures (#​20202)
• Avoid allocating unchanged paths during case normalization (#​20203)
• Avoid allocations when expanding group conflicts (#​20211)
• Avoid allocations when formatting requirements (#​20206)
• Avoid cloning credential lookup services (#​20210)
• Avoid cloning dry-run distributions (#​20209)
• Avoid cloning owned dependency metadata (#​20212)
• Avoid redundant direct URL clones (#​20207)
• Create metadata version errors lazily (#​20205)
• Optimize expanded tag compatibility checks (#​20171)
• Optimize parsing of single-digit three-part versions (#​20118)

Bug fixes

• Avoid overflow when computing HTTP cache age (#​20178)
• Respect --upgrade when upgrade-package is configured (#​19955)
• Support uv tree in dependency-group-only projects (#​20167)
• Treat cache entries as stale at exact expiration (#​20183)

v0.11.27

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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)