yt 4.0.4 is out ! 

This is a bugfix release. Most notably it fixes (future) compatibility with matplotlib 3.6, as well as a couple minor bugs.
It is available on PyPI and conda-forge. See the release notes for how to upgrade https://github.com/yt-project/yt/releases/tag/yt-4.0.4
Happy data crunching

Clément