@Szabolcs You can do pip install pygments-mathematica --upgrade Not sure why it doesn't show up in search but the page is here pypi.python.org/pypi/pygments-mathematica
I think I made the release in pypi yesterday but forgot to push the wheel file which is what gets downloaded. In any case, I tested it with a fresh environment and it installs 0.3.2
@R.M. I used exactly that (well, I used -U instead of --upgrade) and it said there's no upgrade available. Maybe not all mirrors had it yet? Anyway, I already installed from source.