darktablePortable update not detected

I've been eagerly checking for the darktable update via the PortableApps interface and nothing had been showing for quite some time. Yesterday I decided to check the darktable webpage on the PortableApps.com site and lo and behold there was an update (version 5.4) from the end of December.

This is the only app I know of (so far) where an update wasn't detected.

Anyway, I got the update so I'm a happy camper now, but I thought I'd report the issue.