Simon Willison’s Weblog

7th January 2025

uv python install --reinstall 3.13. I couldn't figure out how to upgrade the version of Python 3.13 I had previous installed using uv - I had Python 3.13.0.rc2. Thanks to Charlie Marsh I learned the command for upgrading to the latest uv-supported release:

uv python install --reinstall 3.13

I can confirm it worked using:

uv run --python 3.13 python -c 'import sys; print(sys.version)'

Caveat from Zanie Blue on my PR to document this:

There are some caveats we'd need to document here, like this will break existing tool installations (and other virtual environments) that depend on the version. You'd be better off doing uv python install 3.13.X to add the new patch version in addition to the existing one.