I am not an expert when it comes to linux but while trying to get Scribus installed today I learned the following:
sudo apt search scribus
Will bring up the list of software related to Scribus, one package there is called scribus-ng which, although I can't find out what -ng stands for, it seems to offer an alternative version, though systems may have different ng versions. For me on my raspberry pi it is 1.4.0
and the regular version is 1.4.8
I am having the opposite problem. I need 1.5.x on my raspberry pi.