[ubuntu] Upgrading Munin on Ubuntu LTS

Hi,

I have Munin installed. Version information are below:

munin-node-configure (munin-node) version 1.4.6.
Written by Jimmy Olsen


Copyright (C) 2003-2006 Jimmy Olsen


This is free software released under the GNU General Public License. There
is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. For details, please refer to the file COPYING that is included
with this software or refer to
http://www.fsf.org/licensing/licenses/gpl.txt

Would anyone help me please upgrading to the latest Munin version? I'm using Ubuntu 12.04 LTS.