diff --git a/UPGRADE.md b/UPGRADE.md
index 8846eb0..6e5043b 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -1,5 +1,9 @@
 # Upgrade Notes
 
+## 3.1.3
+- **[ENHANCEMENT]** Allow no auth_config for Google Index Worker [@dpfaffenbauer](https://github.com/dachcom-digital/pimcore-seo/pull/69)
+- **[BUGFIX]** Fix Migration and Installer
+
 ## 3.1.2
 - **[BUGFIX]** Improve Migrations
 
diff --git a/config/install/sql/install.sql b/config/install/sql/install.sql
index 39b77b2..9efcbda 100644
--- a/config/install/sql/install.sql
+++ b/config/install/sql/install.sql
@@ -6,7 +6,7 @@ CREATE TABLE IF NOT EXISTS `seo_element_meta_data` (
   `data` longtext NOT NULL COMMENT '(DC2Type:array)',
   `release_type` varchar(255) default 'public' not null,
   PRIMARY KEY (`id`),
-  UNIQUE KEY `element_type_id_integrator` (`element_type`,`element_id`,`integrator`)
+  UNIQUE KEY `element_type_id_integrator` (`element_type`,`element_id`,`integrator`, `release_type`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC;
 
 CREATE TABLE IF NOT EXISTS `seo_queue_entry` (
diff --git a/src/Migrations/Version20240827080929.php b/src/Migrations/Version20240827080929.php
new file mode 100644
index 0000000..12635c4
--- /dev/null
+++ b/src/Migrations/Version20240827080929.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SeoBundle\Migrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20240827080929 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema): void
+    {
+        if (!$schema->getTable('seo_element_meta_data')->hasIndex('element_type_id_integrator')) {
+            return;
+        }
+
+        $this->addSql('DROP INDEX element_type_id_integrator ON seo_element_meta_data;');
+        $this->addSql('CREATE UNIQUE INDEX element_type_id_integrator ON seo_element_meta_data (element_type, element_id, integrator, release_type);');
+    }
+
+    public function down(Schema $schema): void
+    {
+    }
+}
diff --git a/src/Tool/Install.php b/src/Tool/Install.php
index 85e5d9a..a3aa113 100644
--- a/src/Tool/Install.php
+++ b/src/Tool/Install.php
@@ -6,6 +6,7 @@
 use Pimcore\Extension\Bundle\Installer\Exception\InstallationException;
 use Pimcore\Extension\Bundle\Installer\SettingsStoreAwareInstaller;
 use Pimcore\Model\User\Permission;
+use SeoBundle\Migrations\Version20240827080929;
 use Symfony\Component\Serializer\Encoder\DecoderInterface;
 
 class Install extends SettingsStoreAwareInstaller
@@ -36,6 +37,11 @@ public function install(): void
         parent::install();
     }
 
+    public function getLastMigrationVersionClassName(): ?string
+    {
+        return Version20240827080929::class;
+    }
+
     protected function installDbStructure(): void
     {
         $db = \Pimcore\Db::get();