diff --git a/classes/cluster/virtual-mcp11-contrail/stacklight/server.yml b/classes/cluster/virtual-mcp11-contrail/stacklight/server.yml
index 4f7a0bd..dfd50bb 100755
--- a/classes/cluster/virtual-mcp11-contrail/stacklight/server.yml
+++ b/classes/cluster/virtual-mcp11-contrail/stacklight/server.yml
@@ -15,6 +15,7 @@
 - system.haproxy.proxy.listen.stacklight.kibana
 - service.haproxy.proxy.single
 - system.keepalived.cluster.instance.prometheus_server_vip
+- system.prometheus.server.alertmanager.dns
 - system.prometheus.server.target.dns
 - system.docker.swarm.stack.monitoring
 - system.docker.swarm.service.dashboard.grafana_server
diff --git a/classes/cluster/virtual-mcp11-dvr/stacklight/server.yml b/classes/cluster/virtual-mcp11-dvr/stacklight/server.yml
index 3405614..cd9fc9f 100644
--- a/classes/cluster/virtual-mcp11-dvr/stacklight/server.yml
+++ b/classes/cluster/virtual-mcp11-dvr/stacklight/server.yml
@@ -15,6 +15,7 @@
 - system.haproxy.proxy.listen.stacklight.kibana
 - service.haproxy.proxy.single
 - system.keepalived.cluster.instance.prometheus_server_vip
+- system.prometheus.server.alertmanager.dns
 - system.prometheus.server.target.dns
 - system.docker.swarm.stack.monitoring
 - system.docker.swarm.service.dashboard.grafana_server
diff --git a/classes/cluster/virtual-mcp11-k8s-calico-dyn/stacklight/server.yml b/classes/cluster/virtual-mcp11-k8s-calico-dyn/stacklight/server.yml
index 8e56ad6..6919acf 100644
--- a/classes/cluster/virtual-mcp11-k8s-calico-dyn/stacklight/server.yml
+++ b/classes/cluster/virtual-mcp11-k8s-calico-dyn/stacklight/server.yml
@@ -17,6 +17,7 @@
 - system.galera.server.database.grafana
 - system.salt.minion.cert.prometheus_server
 - system.keepalived.cluster.instance.prometheus_server_vip
+- system.prometheus.server.alertmanager.dns
 - system.prometheus.server.target.etcd
 - system.prometheus.server.target.kubernetes
 - system.prometheus.server.target.dns
diff --git a/classes/cluster/virtual-mcp11-k8s-calico/stacklight/server.yml b/classes/cluster/virtual-mcp11-k8s-calico/stacklight/server.yml
index 5635528..4e48477 100644
--- a/classes/cluster/virtual-mcp11-k8s-calico/stacklight/server.yml
+++ b/classes/cluster/virtual-mcp11-k8s-calico/stacklight/server.yml
@@ -17,6 +17,7 @@
 - system.galera.server.database.grafana
 - system.salt.minion.cert.prometheus_server
 - system.keepalived.cluster.instance.prometheus_server_vip
+- system.prometheus.server.alertmanager.dns
 - system.prometheus.server.target.etcd
 - system.prometheus.server.target.kubernetes
 - system.prometheus.server.target.dns
diff --git a/classes/cluster/virtual-mcp11-k8s-contrail/stacklight/server.yml b/classes/cluster/virtual-mcp11-k8s-contrail/stacklight/server.yml
index 6ef0e82..8d95ad3 100644
--- a/classes/cluster/virtual-mcp11-k8s-contrail/stacklight/server.yml
+++ b/classes/cluster/virtual-mcp11-k8s-contrail/stacklight/server.yml
@@ -13,6 +13,7 @@
 - system.glusterfs.server.volume.prometheus
 - system.salt.minion.cert.prometheus_server
 - system.keepalived.cluster.instance.prometheus_server_vip
+- system.prometheus.server.alertmanager.dns
 - system.prometheus.server.target.etcd
 - system.prometheus.server.target.kubernetes
 - system.prometheus.server.target.dns
diff --git a/classes/system b/classes/system
index 7f63214..7e9b8b2 160000
--- a/classes/system
+++ b/classes/system
@@ -1 +1 @@
-Subproject commit 7f63214c596dfc8ce1636f7e5521f68b122c4116
+Subproject commit 7e9b8b2c04e17bcfd4cbbfb60b7b10a57a6b03dc