diff --git a/charts/posthog/values.yaml b/charts/posthog/values.yaml
index 35dd7c48..ef1d36b8 100644
--- a/charts/posthog/values.yaml
+++ b/charts/posthog/values.yaml
@@ -2512,8 +2512,8 @@ prometheus:
                 description: "The `session_recording_events_dlq` topic offset has increased over the past 5 minutes."
 
             - alert: GraphileJobExecutionLag
-              expr: (max by(task_identifier) (posthog_celery_graphile_lag_seconds{task_identifier!="bufferJob"})) > 900
-              for: 5m
+              expr: ((max by(task_identifier) (posthog_celery_graphile_lag_seconds{task_identifier!="bufferJob"})) > 900) unless absent(posthog_celery_graphile_lag_seconds{task_identifier!="bufferJob"})
+              for: 10m
               labels:
                 rotation: common
                 severity: critical