mhdi [1] filed a deletion request for pk-update-icon [2]: pk-update-icon is no longer developed and will only receive fixes for critical bugs and security issues. All users are encouraged to switch to package-update-indicator [1].
[1] https://code.guido-berhoerster.org/projects/package-update- indicator/ [1] https://aur.archlinux.org/account/mhdi/ [2] https://aur.archlinux.org/pkgbase/pk-update-icon/
