diff --git a/application/src/main/data/upgrade/3.1.0/schema_update.sql b/application/src/main/data/upgrade/3.1.0/schema_update.sql
new file mode 100644
index 0000000000..e3b2cfb9a4
--- /dev/null
+++ b/application/src/main/data/upgrade/3.1.0/schema_update.sql
@@ -0,0 +1,17 @@
+--
+-- Copyright © 2016-2020 The Thingsboard Authors
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+
+CREATE INDEX IF NOT EXISTS idx_alarm_tenant_alarm_type_created_time ON alarm(tenant_id, type, created_time DESC);
diff --git a/application/src/main/java/org/thingsboard/server/install/ThingsboardInstallService.java b/application/src/main/java/org/thingsboard/server/install/ThingsboardInstallService.java
index 73661f40e1..de7b2bdce3 100644
--- a/application/src/main/java/org/thingsboard/server/install/ThingsboardInstallService.java
+++ b/application/src/main/java/org/thingsboard/server/install/ThingsboardInstallService.java
@@ -172,6 +172,9 @@ public class ThingsboardInstallService {
                             log.info("Upgrading ThingsBoard from version 3.0.1 to 3.1.0 ...");
                             databaseEntitiesUpgradeService.upgradeDatabase("3.0.1");
                             dataUpdateService.updateData("3.0.1");
+                        case "3.1.0":
+                            log.info("Upgrading ThingsBoard from version 3.1.0 to 3.1.1 ...");
+                            databaseEntitiesUpgradeService.upgradeDatabase("3.1.0");
                             log.info("Updating system data...");
                             systemDataLoaderService.updateSystemWidgets();
                             break;
diff --git a/application/src/main/java/org/thingsboard/server/service/install/SqlDatabaseUpgradeService.java b/application/src/main/java/org/thingsboard/server/service/install/SqlDatabaseUpgradeService.java
index e21472ee12..8cf471ab38 100644
--- a/application/src/main/java/org/thingsboard/server/service/install/SqlDatabaseUpgradeService.java
+++ b/application/src/main/java/org/thingsboard/server/service/install/SqlDatabaseUpgradeService.java
@@ -295,6 +295,14 @@ public class SqlDatabaseUpgradeService implements DatabaseEntitiesUpgradeService
                     log.error("Failed updating schema!!!", e);
                 }
                 break;
+            case "3.1.0":
+                try (Connection conn = DriverManager.getConnection(dbUrl, dbUserName, dbPassword)) {
+                    log.info("Updating schema ...");
+                    schemaUpdateFile = Paths.get(installScripts.getDataDir(), "upgrade", "3.1.0", SCHEMA_UPDATE_SQL);
+                    loadSql(schemaUpdateFile, conn);
+                    log.info("Schema updated.");
+                }
+                break;
             default:
                 throw new RuntimeException("Unable to upgrade SQL database, unsupported fromVersion: " + fromVersion);
         }