Add these to /etc/apt/sources.list:

#Scribus - Primary repository 
deb http://debian.scribus.net/debian feisty main restricted 
deb-src http://debian.scribus.net/debian feisty main restricted 

#Scribus - Backup repository 
deb http://debian.tagancha.org/debian feisty main restricted 
deb-src http://debian.tagancha.org/debian feisty main restricted

Then add the gpg-keys for these repositories:

sudo gpg --keyserver subkeys.pgp.net --recv-keys EEF818CF sudo gpg --armor --export EEF818CF | sudo apt-key add -

Update & upgrade

sudo apt-get update

(might have to do this twice)

sudo apt-get upgrade

This should show scribus as the package (or as one of the packages) to be upgraded. Proceed with upgrading.

Install icc-profiles also:

sudo apt-get install icc-profiles

Ref.: http://wiki.scribus.net/index.php/Getting\_Scribus\_on\_Ubuntu/Kubuntu\_up\_and\_running

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