Add new repository to your sources.list:
deb http://deb.uucp.hu/ wheezy yazzy
[Experimental] Add repack component – this may take precedence over official Debian packages:
deb http://deb.uucp.hu/ wheezy yazzy repack
Install this repository's GPG key:
wget -O - http://deb.uucp.hu/pubkey.gpg | apt-key add -