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Drop Python 3.9 - #1644

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Zsailer merged 1 commit into
jupyter-server:mainfrom
krassowski:drop-3.9
May 19, 2026
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Drop Python 3.9#1644
Zsailer merged 1 commit into
jupyter-server:mainfrom
krassowski:drop-3.9

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@krassowski

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Python 3.9 reached End of Life over 6 months ago (https://devguide.python.org/versions/) and the CI is now failing across the board for 3.9. I don't think there is value in maintaining it; we kept the support a bit longer to publish one final version with security fixes, but now that 2.18.x stabilised it's time to drop it.

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krassowski marked this pull request as ready for review May 19, 2026 13:01
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krassowski requested review from Carreau and Zsailer and removed request for Zsailer May 19, 2026 13:01
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Zsailer commented May 19, 2026

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LGTM, thanks @krassowski!

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Zsailer merged commit 3df9a70 into jupyter-server:main May 19, 2026
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krassowski deleted the drop-3.9 branch May 25, 2026 07:54
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