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Python 3.7 support is deprecated
Change effective on 08 February 2023
Python 3.7 is due to reach its scheduled upstream end-of-life on June 27th, 2023. As such, Python 3.7 support on Heroku is now deprecated.
Apps using Python 3.7 will continue to build for now, however, a warning will be shown in the build log.
We recommend upgrading to a newer Python version as soon as possible, to ensure your app both remains secure and can also benefit from the many performance improvements found in newer versions of Python.
For more information, see our page on Python Support.