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On-demand source fetching

February 5, 2026 You now have precise control over when private sources are loaded — useful in offline or air-gapped environments, and for pre-fetching sources once in CI before running multiple analyses. A new qlty sources fetch command fetches the sources defined in qlty.toml without running analysis, and a new --skip-source-fetch flag tells qlty check and qlty fmt to use what’s already on disk. 
qlty sources fetch
qlty check --skip-source-fetch
qlty fmt --skip-source-fetch

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Python 3.13+ support

February 14, 2026 The Qlty CLI now supports multiple Python runtime releases, enabling Python 3.13 and newer for plugins that require recent Python versions.