v6.4.1

heroku/python

Changed

• Updated Poetry from 2.3.3 to 2.3.4. (#553)
• Updated uv from 0.11.3 to 0.11.6. (#552)

v6.4.0

heroku/python

Added

• Added support for Ubuntu 26.04 (and thus Heroku-26 / heroku/builder:26). (#550)

v6.3.0

heroku/python

Changed

• The Python 3.14 version alias now resolves to Python 3.14.4. (#548)
• The Python 3.13 version alias now resolves to Python 3.13.13. (#548)
• The forbidden env vars check now reports all forbidden env vars found rather than only the first. (#542)
• The forbidden env vars check now checks for known problematic Poetry env vars too. (#542)

v6.2.0

heroku/python

Changed

• Updated Poetry from 2.3.2 to 2.3.3. (#532)
• Updated uv from 0.10.9 to 0.11.3. (#535)

v6.1.0

heroku/python

Changed

• Updated uv from 0.10.7 to 0.10.9. (#523)
• Switched to downloading uv from releases.astral.sh instead of GitHub releases. (#524)

v6.0.1

heroku/python

Changed

• The Python 3.12 version alias now resolves to Python 3.12.13. (#521)
• The Python 3.11 version alias now resolves to Python 3.11.15. (#521)
• The Python 3.10 version alias now resolves to Python 3.10.20. (#521)

v6.0.0

heroku/python

Changed

• Updated pip from 25.3 to 26.0.1. (#508)
• Updated uv from 0.10.1 to 0.10.7. (#518)
• Explicitly configured uv to use hard links to maintain the behaviour of previous versions. (#519)

v5.1.0

heroku/python

Changed

• Changed the S3 URL used to download Python to use AWS' dual-stack (IPv6 compatible) endpoint. (#513)

v5.0.0

heroku/python

Changed

• Updated uv from 0.9.29 to 0.10.1. (#510)

v4.1.2

heroku/python

Changed

• Updated Poetry from 2.3.1 to 2.3.2. (#501)
• Updated uv from 0.9.26 to 0.9.29. (#506)