[scribus] Problems installing on Mac

[Sue Diver]

Hi,
I’ve been recommended to use Scribus for desktop publishing but when I attempt to download it to my Mac (running Big Sur 11.1) although the file downloads when I try to open the file I get the message 

“Scribus” can’t be opened because Apple cannot check it for malicious software.
This software needs to be updated. Contact the developer for more information.
This item is on the disk image “scribus-1.5.6.1.dmg”. Chrome downloaded this disk image today at 22:33 from sourceforge.net.

Please could you advise what I need to do?

Thank you!

Kind regards

Sue Diver
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