Python buildpacks updated to uv 0.8.13

Change effective on 26 August 2025

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

  • uv updated from 0.8.9 to 0.8.13 (changelog)

We recently added support for uv. If you have not used the package manager uv before, we highly recommend giving it a try - it supports lockfiles, is extremely fast, and is actively maintained by a full-time team! Learn more in our blog post Heroku Adds Support for uv.