[arch-general] Unresponsive maintainer

Hi all! There is a maintainer, who has lots of out-of-date packages in the Extra repo: https://www.archlinux.org/packages/?packager=guillaume   Some of these packages were flagged out-of-date in 2017 (!). I've e-mailed the maintainer (to his address from PKGBUILD file), but there is no response for two weeks. I want one of his packages ( https://www.archlinux.org/packages/extra/x86_64/visualvm ) to be updated because an important bug was fixed in the upstream (I've already built this package, installed and tested locally with the newest upstream software version). What is the correct way to handle this situation? Redargs, Danila Kiver.