Sudo apt upgrade

[zenzen]

I'm not on Zorin right now but here's how it should look like:

https://forum.zorin.com/uploads/default/original/3X/9/4/945582e3400107ec47e5869eb914e5db4999dcf1.png

From this thread:

Zorin OS update problem

Yes, try untick the i386 repositor(ies). Zorin 16 only comes as 64-bit where Zorin 15 comes both as 32 and 64 bit. That's why I was asking.