diff --git a/modules/kubernetes/monitoring/prometheus_chart_values.tpl b/modules/kubernetes/monitoring/prometheus_chart_values.tpl
index 0657e8f9..2ab9cfae 100644
--- a/modules/kubernetes/monitoring/prometheus_chart_values.tpl
+++ b/modules/kubernetes/monitoring/prometheus_chart_values.tpl
@@ -238,7 +238,7 @@ serverFiles:
               summary: "High permission error rate for {{ $labels.ingress }}: {{ $value }}%."
           - alert: HighIngressServerErrors
             expr: (sum(rate(nginx_ingress_controller_requests{status=~"5.*"}[2m])) by (ingress) / sum(rate(nginx_ingress_controller_requests[2m])) by (ingress)  * 100) > 10
-            for: 10m
+            for: 20m
             labels:
               severity: page
             annotations: