diff --git a/monitor-snapshot/master/ansible-monitor.tar.gz b/monitor-snapshot/master/ansible-monitor.tar.gz
index d4592c9f..208c1fa1 100644
Binary files a/monitor-snapshot/master/ansible-monitor.tar.gz and b/monitor-snapshot/master/ansible-monitor.tar.gz differ
diff --git a/monitor-snapshot/master/operator/dashboards/tidb.json b/monitor-snapshot/master/operator/dashboards/tidb.json
index 29a24707..624c78c2 100644
--- a/monitor-snapshot/master/operator/dashboards/tidb.json
+++ b/monitor-snapshot/master/operator/dashboards/tidb.json
@@ -22875,7 +22875,7 @@
           "targets": [
             {
               "exemplar": true,
-              "expr": "avg(tidb_server_ttl_watermark_delay{k8s_cluster=\"$k8s_cluster\",tidb_cluster=\"$tidb_cluster\", type=\"schedule\"}) by (type, name)",
+              "expr": "max(tidb_server_ttl_watermark_delay{k8s_cluster=\"$k8s_cluster\",tidb_cluster=\"$tidb_cluster\", type=\"schedule\"}) by (type, name)",
               "interval": "",
               "legendFormat": "{{ name }}",
               "queryType": "randomWalk",