ruff 0.15.20

on Python PyPI

Release Notes

Released on 2026-06-25.

Preview features

• Allow human-readable names in rule selectors (#25887)
• Emit a warning instead of an error for unknown rule selectors (#26113)
• Match noqa shebang handling in ruff:ignore comments (#26286)
• [ruff] Remove pytest-fixture-autouse (RUF076) (#26240, #26371)

Documentation

• Add versioning sections to custom crate READMEs (#26317)
• Update ruff_python_parser README for crates.io (#26315)
• [perflint] Clarify that PERF402 applies to any iterable (#26242)

Contributors

• @dhruvmanila
• @MichaReiser
• @ntBre
• @trilamsr

Install ruff 0.15.20

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ruff/releases/download/0.15.20/ruff-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ruff/releases/download/0.15.20/ruff-installer.ps1 | iex"

Download ruff 0.15.20

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/ruff

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>