Installing Redmine on SUSE Linux Enterprise 15.7 (SLES 15.7)

Hello,
I'm running SLES 15.7, fresh installation.
I was trying to install Ruby, version 2.5.9x is already installed.

So I decided to install the last version available on SLES repos:

zypper install ruby3.4

Installation succeded.

After installation I check with:

ruby -v

And the versiona installed is:

ruby 2.5.9p229 (2021-04-05 revision 67939) [x86_64-linux-gnu]

Now I can't figure out how to use Ruby 3.4.

Anyone has suggestions?

Thanks

Redmine