I'm trying to install debug symbol packages for kwin on to a kubuntu 20.04.2 system.

I get the following error
# apt install kwin-common-dbgsym
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
kwin-common-dbgsym : Depends: kwin-common (= 4: but 4:5.18.5-0ubuntu0.1 is to be installed
E: Unable to correct problems, you have held broken packages.

When I do apt show for it, I can see it is not being installed from focal-updates
APT-Sources: http://ddebs.ubuntu.com focal/universe amd64 Packages

But I have the following repositories included:
deb http://ddebs.ubuntu.com focal main restricted universe multiverse
deb http://ddebs.ubuntu.com focal-updates main restricted universe multiverse

Are the 4: versions missing, or do I not have something set up correctly to get the updated versions?