Debian unable to locate package primus-nvidia

I am attempting to install three packages through the following command:

install bumblebee-nvidia primus-nvidia nvidia-smi

The bumblebee-nvidia and nvidia-smi work individually however, primus-nvidia can't be found. I think I might be missing a line in my sources.list. Here is my current sources.list:

deb http://deb.debian.org/debian/  buster main non-free contrib
deb-src http://deb.debian.org/debian/  buster main non-free contrib

deb http://security.debian.org/debian-security  buster/updates main contrib non-free
deb-src http://security.debian.org/debian-security  buster/updates main contrib non-free

# buster-updates, previously known as 'volatile'
deb http://deb.debian.org/debian/  buster-updates main contrib non-free
deb-src http://deb.debian.org/debian/  buster-updates main contrib non-free

What do I need to do to install primus-nvidia? Any help is appreciated. For reference, I installed debian through a non-free iso