[Koha] wheezy apt repo

Hi, Just to be sure...: koha on wheezy is supported? As the apt repo looks a bit squeeze-ish: deb http://debian.koha-community.org/koha squeeze main I tried 'wheezy' instead of 'squeeze', but that didn't work. Using the above source list I am able to install koha-common. Is that normal the way..? It looks a bit unlogical to me...? We have a running koha on squeeze, but I'd like to move that install to wheezy on kvm -> meaning a new install. Regards, MJ