Python 3.14.6 and 3.13.14 are now available
Change effective on 10 June 2026
Python 3.14.6 and 3.13.14 are now available for use by Python apps on Heroku.
In addition, we have updated the Python 3.14 and 3.13 major version aliases to resolve to these new Python patch versions.
We strongly recommend that you use a major version alias when specifying a Python version for your app instead of pinning to an exact patch version, so that your app receives the latest Python security updates each time you build it.
See Specifying a Python Version for details on how to configure the Python version for your app.