Cant upgrade to 2.9 from 2.8.3

I've installed 2.8.3
Via Synaptic I've marked all for upgrade
Then cancelled the Linuxcnc entries in the repository and added to deb & src:

buildbot.linuxcnc.org
buster
master-rtpreempt

Reload

Some stuff down loaded, but 2.8.3 still remains, not 2.9

I'm pretty sure this is how I did it last time, but for some reason it's not upgrading ?

Sorted.
For some reason Synaptic wasn't updating the'sources.list' completly .
I added the details manually via Geany, and re-open Synaptic, and it worked.