Python buildpacks updated to uv 0.10.9

Change effective on 13 March 2026

We have updated the package managers used during the build of Python apps as follows:

  • uv updated from 0.10.7 to 0.10.9 (changelog)

The Python buildpacks now also download uv from releases.astral.sh instead of GitHub Releases, for improved reliability.

If you have not used the package manager uv before, we highly recommend giving it a try! Learn more in our blog post Heroku Adds Support for uv.