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release. Only release title and notes can be modified.
Release Notes
Released on 2026-08-27.
Preview features
- Allow rules without codes (#28049)
- Introduce category selectors (#27666)
- Update preview default rules and categories (#27877)
Bug fixes
- [
flake8-async] Detect blocking generic HTTP requests (ASYNC210) (#28024) - [
flake8-datetimez] Allow timezone-safestrptimechains (DTZ007) (#28023) - [
flake8-simplify] Respect side effects inlambdadefaults (SIM401) (#28000)
Server
- Fix duplicated "of" in
ClientOptionsdoc comment (#27978)
Documentation
Contributors
Install ruff 0.16.5
Install prebuilt binaries via shell script
curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ruff/releases/download/0.16.5/ruff-installer.sh | shInstall prebuilt binaries via powershell script
powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ruff/releases/download/0.16.5/ruff-installer.ps1 | iex"Download ruff 0.16.5
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/ruffYou 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>