v0.55.1 v0.55.0

Name: ruff
Author: astral-sh

astral-sh/ruffOct 2, 2026 → Oct 2, 20260 days between releases

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Analyzing what changed between v0.55.1 and v0.55.0. This page updates automatically — usually within a minute.

The Two Releases

v0.55.1

Oct 2, 2026· 19 days ago

Ruff 0.16.10 introduces a migration guide for categories, adds a new rule for context manager iterator annotations, reduces memory usage for diagnostics, and avoids running `uv format` in untrusted workspaces.

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v0.55.0

Oct 2, 2026· 19 days ago

Ruff 0.16.9 fixes false positives in flake8-bugbear for calls with keyword arguments, allows lazy imports in deferred annotations, and updates LibCST-based fixes for Python 3.15.

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