diff --git a/coreos-config/roles/compose_project/templates/prometheus/alertmanager.yml b/coreos-config/roles/compose_project/templates/prometheus/alertmanager.yml
index 24e00aa..15ff635 100644
--- a/coreos-config/roles/compose_project/templates/prometheus/alertmanager.yml
+++ b/coreos-config/roles/compose_project/templates/prometheus/alertmanager.yml
@@ -5,7 +5,7 @@ route:
   group_by: ['alertname']
   group_wait: 30s
   group_interval: 5m
-  repeat_interval: 5m
+  repeat_interval: 1h
   receiver: 'matrix-monitoring'
   routes:
     - receiver: 'email'