diff --git a/roles/dns_intern/templates/bind/23.172.in-addr.arpa.zone.j2 b/roles/dns_intern/templates/bind/23.172.in-addr.arpa.zone.j2
index 6367f43..74a1ea9 100644
--- a/roles/dns_intern/templates/bind/23.172.in-addr.arpa.zone.j2
+++ b/roles/dns_intern/templates/bind/23.172.in-addr.arpa.zone.j2
@@ -1,7 +1,7 @@
 $ORIGIN 23.172.in-addr.arpa.	; base for unqualified names
 $TTL 1h				; default time-to-live
 @				IN	SOA ns1.binary.kitchen. hostmaster.binary.kitchen. (
-					2021120101; serial
+					2022071600; serial
 					1d; refresh
 					2h; retry
 					4w; expire
@@ -91,6 +91,7 @@ $GENERATE 2-254 $.10		IN	PTR	vpn-${0,3,d}-10.binary.kitchen.
 111.12				IN	PTR	rfp11.binary.kitchen.
 ; Services Auweg
 3.13				IN	PTR	aeron.binary.kitchen.
+12.13				IN	PTR	lock-auweg.binary.kitchen.
 ; Clients Auweg
 $GENERATE 10-230 $.14		IN	PTR	dhcp-${0,3,d}-14.binary.kitchen.
 ; MQTT
diff --git a/roles/dns_intern/templates/bind/binary.kitchen.zone.j2 b/roles/dns_intern/templates/bind/binary.kitchen.zone.j2
index 77201ba..fc4c762 100644
--- a/roles/dns_intern/templates/bind/binary.kitchen.zone.j2
+++ b/roles/dns_intern/templates/bind/binary.kitchen.zone.j2
@@ -1,7 +1,7 @@
 $ORIGIN binary.kitchen		; base for unqualified names
 $TTL 1h				; default time-to-live
 @				IN	SOA ns1.binary.kitchen. hostmaster.binary.kitchen. (
-					2021120101; serial
+					2022071600; serial
 					1d; refresh
 					2h; retry
 					4w; expire
@@ -112,6 +112,7 @@ weizen				IN	A	172.23.12.61
 rfp11				IN	A	172.23.12.111
 ; Services Auweg
 aeron				IN	A	172.23.13.3
+lock-auweg			IN	A	172.23.13.12
 ; Clients Auweg
 $GENERATE 10-230 dhcp-${0,3,d}-14	IN	A	172.23.14.$
 ; MQTT Auweg