Mate keyring

Afternoon all.
Attempting to build a new iso using Mate Desktop.

Error that shows after apt-get update

apt-get install mate-archive-keyring
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package mate-archive-keyring

http://forums.mate-desktop.org/viewtopic.php?f=5&t=3000 says that there is no keyring for mate 1.8

Now since I followed the directions from here: http://docs.kali.org/development/cus...op-environment should it be changed to reflect the difference, or is everything else wrong.

I am trying harder!

Ideas?