Add apparmor-utils to debian 10 apt/sources.list

having trouble
root@rock64:~# sudo apt-get install apparmor-utils
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following additional packages will be installed:
apparmor python3-apparmor python3-libapparmor

suspect that i do not have this repository or repositores in my /etc/apt/sources.list.
Does any one have the proper adding of these to sources.list.