diff --git a/documentation/prometheus-mixin/alerts.libsonnet b/documentation/prometheus-mixin/alerts.libsonnet
index baf2f2f0f..0f9b4b3d6 100644
--- a/documentation/prometheus-mixin/alerts.libsonnet
+++ b/documentation/prometheus-mixin/alerts.libsonnet
@@ -391,7 +391,7 @@
                 and
                   ( 
                     count by (%(prometheusHAGroupLabels)s) (
-                      changes(process_start_time_seconds{%(prometheusSelector)s}[30m]) > 1
+                      changes(process_start_time_seconds{%(prometheusSelector)s}[1h]) > 1
                     ) 
                     / 
                     count by (%(prometheusHAGroupLabels)s) (
@@ -418,7 +418,7 @@
             },
             annotations: {
               summary: 'More than half of the Prometheus instances within the same HA group are crashlooping.',
-              description: '{{ $value | humanizePercentage }} of Prometheus instances within the %(prometheusHAGroupName)s HA group have had at least 5 total restarts or 2 unclean restarts in the last 30m.' % $._config,
+              description: '{{ $value | humanizePercentage }} of Prometheus instances within the %(prometheusHAGroupName)s HA group have had at least 5 total restarts in the last 30m or 2 unclean restarts in the last 1h.' % $._config,
             },
           },
         ],