-deb {{ debian_mirror }}-security {{ debian_distr }}/updates main non-free contrib
-#deb {{ debian_mirror }} {{ debian_distr }}-backports main non-free contrib
+#deb http://security.debian.org/debian-security bullseye-security main contrib non-free
+deb {{ debian_mirror }}-security {{ debian_distr }}-security main contrib non-free
+#deb {{ debian_mirror }} {{ debian_distr }}-backports main contrib non-free