diff --git a/roles/prometheus-alertmanager/templates/prometheus/alertmanager.yml.j2 b/roles/prometheus-alertmanager/templates/prometheus/alertmanager.yml.j2
index b9f0e36d..bf4d26e0 100644
--- a/roles/prometheus-alertmanager/templates/prometheus/alertmanager.yml.j2
+++ b/roles/prometheus-alertmanager/templates/prometheus/alertmanager.yml.j2
@@ -36,7 +36,7 @@ route:
 
   # If an alert has successfully been sent, wait 'repeat_interval' to
   # resend them.
-  repeat_interval: 12h 
+  repeat_interval: 24h
 
   # A default receiver
   receiver: webhook-ninjabot