Release Pillow 11.2.1 on April 12, 2025 #8886
Description
This is essentially a main quarterly release after 11.2.0 was unsuccessful due to hitting the PyPI project limit during release, and then we also changed tack regarding including AVIF in wheels, so deleted 11.2.0 and are starting afresh here.
Main Release
Released quarterly on January 2nd, April 1st, July 1st and October 15th.
- Open a release ticket e.g. Release Pillow 5.2.0 on July 1, 2018 #3154
- Develop and prepare release in
mainbranch.- Add release notes for 11.2.1 Add 11.2.1 release notes #8885
- Check GitHub Actions to confirm passing tests in
mainbranch. - Check that all the wheel builds pass the tests in the GitHub Actions "Wheels" workflow jobs by manually triggering them.
- In compliance with PEP 440, update version identifier in
src/PIL/_version.py - Run pre-release check via
make release-testin a freshly cloned repo. - Create branch and tag for release e.g.:
git branch 11.2.x git tag 11.2.1 git push --tags
- Check the GitHub Actions "Wheels" workflow has passed, including the "Upload release to PyPI" job. This will have been triggered by the new tag.
- Publish the release on GitHub.
- In compliance with PEP 440, increment and append
.dev0to version identifier insrc/PIL/_version.pyand then:git push --all
Publicize Release
- Announce release availability via Mastodon e.g. https://fosstodon.org/@pillow/110639450470725321
Documentation
- Make sure the default version for Read the Docs is up-to-date with the release changes
Docker Images
- Update Pillow in the Docker Images repository
git clone https://github.com/python-pillow/docker-images cd docker-images ./update-pillow-tag.sh [[release tag]]