--- /dev/null
+deb http://http.us.debian.org/debian buster main
+deb-src http://http.us.debian.org/debian buster main
+
+deb http://security.debian.org/ buster/updates main
+deb-src http://security.debian.org/ buster/updates main
+
+deb http://http.us.debian.org/debian buster-updates main
+deb-src http://http.us.debian.org/debian buster-updates main
+
+deb http://http.debian.net/debian buster-backports main
+deb-src http://http.debian.net/debian buster-backports main