<!-- Welcome! Thank you for contributing. These HTML comments will not render in the issue, but you can delete them once you've read them if you prefer! --> <!-- Thanks for thinking of a way to improve Jupyter Scheduler. If this solves a problem for you, then it probably solves that problem for lots of people! So the whole community will benefit from this request. Before creating a new feature request please search the existing issues for relevant feature requests: https://github.com/jupyter-server/jupyter-scheduler/issues --> ### Problem Python 3.9 have reached end-of-life in Q4 2025 https://devguide.python.org/versions/. ### Proposed solution Remove support for Python 3.9 by updating version classifiers.