Ruff 0.16.8

Ruff 0.16.8.

Released September 16, 2026.

Astral keeps shipping the fast Python linter on a rapid cadence.

Autofix for PTH116

flake8-use-pathlib gains an autofix for PTH116.

That rule now repairs itself instead of waiting for your hands.

Windows CPU fix

Bug fix for InvalidInstruction on Windows CPUs without certain instruction support.

Fewer crashes on older hardware.

Preview polish

More fixes to preview-mode rules.

Nothing breaking.

Done

Update when your CI runs it.