Python 3.13 and 3.14 are now available - Vercel

Starting today, Builds and Functions can now use Python 3.13 or Python 3.14 in addition to previously supported Python 3.12. Builds that do not specify a Python version will use Python 3.12.

If you need to continue using Python 3.12, please ensure that your project manifest (pyproject.toml or Pipfile) specifies an upper bound on the Python version as shown in the examples below.

[project]
...
requires-python = "~=3.12.0"

[requires]
python_version = "3.12"

Check out the documentation to learn more about Python support on Vercel.