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feat!: Require Python 3.11 or later - #552
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feat: Add support for Python 3.15 Python 3.10 reached end of life in October 2026, and Python 3.15.0 shipped the same month. Raise requires-python to 3.11, add the 3.15 classifier, and update the CI matrices, the release workflows, and the README to match.
jsonbailey
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Nov 2, 2026
jsonbailey
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I'm not sure this needs to be flagged as breaking. We usually drop EOL versions as non breaking.
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feat: Add support for Python 3.15
Summary
Sets the supported Python range for 10.0 to 3.11 through 3.15.
The policy is to support every CPython version that upstream still supports. Python 3.10 reached end of life in October 2026, and Python 3.15.0 shipped the same month.
pyproject.toml:requires-python = ">=3.11", classifiers, mypypython_version.Note
Overview
Breaking change: the SDK now declares support for Python 3.11 through 3.15 only, dropping 3.10 after upstream EOL.
pyproject.tomlsetsrequires-python = ">=3.11", removes the 3.10 Trove classifier, adds 3.15, and bumps mypy’spython_versionto 3.11. The README states 3.11+ compatibility.CI linux and windows matrices swap 3.10 for 3.15 (still testing 3.11–3.14). manual-publish and release-please build/publish steps use 3.11 instead of 3.10.
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