[Icecast] upgrading icecast to 2.4.1

[Simone Dal Maso]

Hello,
I'm a ubuntu 12.04 user.
I'm currently running icecast 2.3.2 installed from ubuntu apt-get,  with 
Liquidsoap 1.1.1 that instead is compiled by myself.
I'd like to upgrade to icecast 2.4.1, but since I have a webradio and 
all work fine, I'd like to know if there is a procedure or a tutorial on 
how to upgrade from 2.3.2 to 2.4.1.
Which steps  should I follow?
Thank you!