Hmm, where exactly? You mean where it says "v1.1" in the main about page? That's the version of the GameBase program, not of the GameBase Amiga database.
That said, it is very well possible that there's some wrong GBA version number somewhere (it's easy to miss some while updating). So if you see/saw one somewhere, a detailed report about where you saw it would be more than welcome.
Thanks.