[aur-general] How long to wait for package update?

Hi, I just added a comment to https://aur.archlinux.org/packages.php?ID=31746 It seems the package has not changed since two years, even it was flagged out of date. I now sent a link to the sources (the old place was not available anymore). How long should I wait until the maintainer updates the package? I would adapt the package if the maintainer will not update the package. I also did added the maintainer into Cc of this mail, hoping to get soon response. Ciao, Oliver