Downgrade / Install Old Version of pgAdmin4 on Ubuntu

How do I downgrade *pgAdmin4*, or install an old version of *pgAdmin4*?

I installed the latest version and it's not working in my networking
environment. I tried to solve this in another thread, but I'd like to try
downgrading. I can't find a way to do that with *apt*.

I tried to do this and got this:

*~$* sudo apt install pgadmin4=5.5
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:
pgadmin4 : Depends: pgadmin4-server (= 5.5) but 5.6 is to be installed
Depends: pgadmin4-desktop (= 5.5) but 5.6 is to be installed
Depends: pgadmin4-web (= 5.5) but 5.6 is to be installed
E: Unable to correct problems, you have held broken packages.