diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2990067..a0cd395 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,17 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [3.1.0] - 2024-07-09
+Grafana revisions:
+- Tarantool 3:
+  - [Prometheus revision 3](https://grafana.com/api/dashboards/21474/revisions/3/download),
+  - [InfluxDB revision 3](https://grafana.com/api/dashboards/21484/revisions/3/download);
+- Tarantool Cartridge and 1.10—2.x:
+  - [Prometheus revision 20](https://grafana.com/api/dashboards/13054/revisions/20/download),
+  - [InfluxDB revision 20](https://grafana.com/api/dashboards/12567/revisions/20/download);
+- Tarantool Data Grid 2:
+  - [Prometheus revision 9](https://grafana.com/api/dashboards/16406/revisions/9/download),
+  - [InfluxDB revision 9](https://grafana.com/api/dashboards/16405/revisions/9/download).
 
 ### Added
 - Panels for Tarantool 3 configuration status and alerts (#224)
diff --git a/dashboard/panels/cluster.libsonnet b/dashboard/panels/cluster.libsonnet
index 3d0966d..c282db8 100644
--- a/dashboard/panels/cluster.libsonnet
+++ b/dashboard/panels/cluster.libsonnet
@@ -469,7 +469,7 @@ local prometheus = grafana.prometheus;
           SELECT "value" as "ready" FROM %(measurement_with_policy)s
           WHERE ("metric_name" = '%(metric_full_name)s' AND %(ready_filters)s) AND $timeFilter
         )
-        GROUP BY time($__interval), "label_pairs_alias" fill(0)
+        GROUP BY time($__interval), "label_pairs_alias" fill(none)
       |||, {
         metric_full_name: cfg.metrics_prefix + 'tnt_config_status',
         measurement_with_policy: std.format('%(policy_prefix)s"%(measurement)s"', {
diff --git a/tests/InfluxDB/dashboard_custom_compiled.json b/tests/InfluxDB/dashboard_custom_compiled.json
index 66debd7..686a6d4 100644
--- a/tests/InfluxDB/dashboard_custom_compiled.json
+++ b/tests/InfluxDB/dashboard_custom_compiled.json
@@ -253,7 +253,7 @@
                         }
                      ],
                      "policy": "default",
-                     "query": "SELECT (1 * last(\"uninitialized\") + 2 * last(\"check_errors\") + 3 * last(\"startup_in_progress\") +\n        4 * last(\"reload_in_progress\") + 5 * last(\"check_warnings\") + 6 * last(\"ready\")) as \"status\" FROM\n(\n  SELECT \"value\" as \"uninitialized\" FROM \"$measurement\"\n  WHERE (\"metric_name\" = 'vendor_tt_tnt_config_status' AND \"label_pairs_alias\" =~ '$alias' AND \"label_pairs_status\" = 'uninitialized' AND \"vendor_app_tag\" = 'MyCacheApplication') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"check_errors\" FROM \"$measurement\"\n  WHERE (\"metric_name\" = 'vendor_tt_tnt_config_status' AND \"label_pairs_alias\" =~ '$alias' AND \"label_pairs_status\" = 'check_errors' AND \"vendor_app_tag\" = 'MyCacheApplication') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"startup_in_progress\" FROM \"$measurement\"\n  WHERE (\"metric_name\" = 'vendor_tt_tnt_config_status' AND \"label_pairs_alias\" =~ '$alias' AND \"label_pairs_status\" = 'startup_in_progress' AND \"vendor_app_tag\" = 'MyCacheApplication') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"reload_in_progress\" FROM \"$measurement\"\n  WHERE (\"metric_name\" = 'vendor_tt_tnt_config_status' AND \"label_pairs_alias\" =~ '$alias' AND \"label_pairs_status\" = 'reload_in_progress' AND \"vendor_app_tag\" = 'MyCacheApplication') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"check_warnings\" FROM \"$measurement\"\n  WHERE (\"metric_name\" = 'vendor_tt_tnt_config_status' AND \"label_pairs_alias\" =~ '$alias' AND \"label_pairs_status\" = 'check_warnings' AND \"vendor_app_tag\" = 'MyCacheApplication') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"ready\" FROM \"$measurement\"\n  WHERE (\"metric_name\" = 'vendor_tt_tnt_config_status' AND \"label_pairs_alias\" =~ '$alias' AND \"label_pairs_status\" = 'ready' AND \"vendor_app_tag\" = 'MyCacheApplication') AND $timeFilter\n)\nGROUP BY time($__interval), \"label_pairs_alias\" fill(0)\n",
+                     "query": "SELECT (1 * last(\"uninitialized\") + 2 * last(\"check_errors\") + 3 * last(\"startup_in_progress\") +\n        4 * last(\"reload_in_progress\") + 5 * last(\"check_warnings\") + 6 * last(\"ready\")) as \"status\" FROM\n(\n  SELECT \"value\" as \"uninitialized\" FROM \"$measurement\"\n  WHERE (\"metric_name\" = 'vendor_tt_tnt_config_status' AND \"label_pairs_alias\" =~ '$alias' AND \"label_pairs_status\" = 'uninitialized' AND \"vendor_app_tag\" = 'MyCacheApplication') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"check_errors\" FROM \"$measurement\"\n  WHERE (\"metric_name\" = 'vendor_tt_tnt_config_status' AND \"label_pairs_alias\" =~ '$alias' AND \"label_pairs_status\" = 'check_errors' AND \"vendor_app_tag\" = 'MyCacheApplication') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"startup_in_progress\" FROM \"$measurement\"\n  WHERE (\"metric_name\" = 'vendor_tt_tnt_config_status' AND \"label_pairs_alias\" =~ '$alias' AND \"label_pairs_status\" = 'startup_in_progress' AND \"vendor_app_tag\" = 'MyCacheApplication') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"reload_in_progress\" FROM \"$measurement\"\n  WHERE (\"metric_name\" = 'vendor_tt_tnt_config_status' AND \"label_pairs_alias\" =~ '$alias' AND \"label_pairs_status\" = 'reload_in_progress' AND \"vendor_app_tag\" = 'MyCacheApplication') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"check_warnings\" FROM \"$measurement\"\n  WHERE (\"metric_name\" = 'vendor_tt_tnt_config_status' AND \"label_pairs_alias\" =~ '$alias' AND \"label_pairs_status\" = 'check_warnings' AND \"vendor_app_tag\" = 'MyCacheApplication') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"ready\" FROM \"$measurement\"\n  WHERE (\"metric_name\" = 'vendor_tt_tnt_config_status' AND \"label_pairs_alias\" =~ '$alias' AND \"label_pairs_status\" = 'ready' AND \"vendor_app_tag\" = 'MyCacheApplication') AND $timeFilter\n)\nGROUP BY time($__interval), \"label_pairs_alias\" fill(none)\n",
                      "rawQuery": true,
                      "refId": "A",
                      "resultFormat": "time_series",
diff --git a/tests/InfluxDB/dashboard_tarantool3_compiled.json b/tests/InfluxDB/dashboard_tarantool3_compiled.json
index cae0491..d1ca12d 100644
--- a/tests/InfluxDB/dashboard_tarantool3_compiled.json
+++ b/tests/InfluxDB/dashboard_tarantool3_compiled.json
@@ -253,7 +253,7 @@
                         }
                      ],
                      "policy": "default",
-                     "query": "SELECT (1 * last(\"uninitialized\") + 2 * last(\"check_errors\") + 3 * last(\"startup_in_progress\") +\n        4 * last(\"reload_in_progress\") + 5 * last(\"check_warnings\") + 6 * last(\"ready\")) as \"status\" FROM\n(\n  SELECT \"value\" as \"uninitialized\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'uninitialized') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"check_errors\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'check_errors') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"startup_in_progress\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'startup_in_progress') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"reload_in_progress\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'reload_in_progress') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"check_warnings\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'check_warnings') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"ready\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'ready') AND $timeFilter\n)\nGROUP BY time($__interval), \"label_pairs_alias\" fill(0)\n",
+                     "query": "SELECT (1 * last(\"uninitialized\") + 2 * last(\"check_errors\") + 3 * last(\"startup_in_progress\") +\n        4 * last(\"reload_in_progress\") + 5 * last(\"check_warnings\") + 6 * last(\"ready\")) as \"status\" FROM\n(\n  SELECT \"value\" as \"uninitialized\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'uninitialized') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"check_errors\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'check_errors') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"startup_in_progress\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'startup_in_progress') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"reload_in_progress\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'reload_in_progress') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"check_warnings\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'check_warnings') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"ready\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'ready') AND $timeFilter\n)\nGROUP BY time($__interval), \"label_pairs_alias\" fill(none)\n",
                      "rawQuery": true,
                      "refId": "A",
                      "resultFormat": "time_series",
diff --git a/tests/InfluxDB/dashboard_with_custom_panels_compiled.json b/tests/InfluxDB/dashboard_with_custom_panels_compiled.json
index 116b264..c57b69b 100644
--- a/tests/InfluxDB/dashboard_with_custom_panels_compiled.json
+++ b/tests/InfluxDB/dashboard_with_custom_panels_compiled.json
@@ -253,7 +253,7 @@
                         }
                      ],
                      "policy": "default",
-                     "query": "SELECT (1 * last(\"uninitialized\") + 2 * last(\"check_errors\") + 3 * last(\"startup_in_progress\") +\n        4 * last(\"reload_in_progress\") + 5 * last(\"check_warnings\") + 6 * last(\"ready\")) as \"status\" FROM\n(\n  SELECT \"value\" as \"uninitialized\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'uninitialized') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"check_errors\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'check_errors') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"startup_in_progress\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'startup_in_progress') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"reload_in_progress\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'reload_in_progress') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"check_warnings\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'check_warnings') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"ready\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'ready') AND $timeFilter\n)\nGROUP BY time($__interval), \"label_pairs_alias\" fill(0)\n",
+                     "query": "SELECT (1 * last(\"uninitialized\") + 2 * last(\"check_errors\") + 3 * last(\"startup_in_progress\") +\n        4 * last(\"reload_in_progress\") + 5 * last(\"check_warnings\") + 6 * last(\"ready\")) as \"status\" FROM\n(\n  SELECT \"value\" as \"uninitialized\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'uninitialized') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"check_errors\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'check_errors') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"startup_in_progress\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'startup_in_progress') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"reload_in_progress\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'reload_in_progress') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"check_warnings\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'check_warnings') AND $timeFilter\n),\n(\n  SELECT \"value\" as \"ready\" FROM \"$policy\".\"$measurement\"\n  WHERE (\"metric_name\" = 'tnt_config_status' AND \"label_pairs_alias\" =~ /^$alias$/ AND \"label_pairs_status\" = 'ready') AND $timeFilter\n)\nGROUP BY time($__interval), \"label_pairs_alias\" fill(none)\n",
                      "rawQuery": true,
                      "refId": "A",
                      "resultFormat": "time_series",