Python buildpacks updated to pip 25.3
Change effective on 07 January 2026
We have updated the package managers used during the build of Python apps as follows:
- pip updated from 25.2 to 25.3 (changelog)
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.