deb http://ftp.debian.org/debian buster-updates main contrib
# security updates
-deb http://security.debian.org buster/updates main contrib
+deb http://security.debian.org/debian-security buster/updates main contrib
----
+// FIXME for 7.0: change security update suite to bullseye-security
In addition, {pve} provides three different package repositories.
deb http://download.proxmox.com/debian/pve buster pve-no-subscription
# security updates
-deb http://security.debian.org buster/updates main contrib
+deb http://security.debian.org/debian-security buster/updates main contrib
----