diff --git a/composer.json b/composer.json
index f166c0e..03c7919 100644
--- a/composer.json
+++ b/composer.json
@@ -7,23 +7,23 @@
     ],
     "require": {
         "php": " >=8.3",
-        "ibexa/core": "~5.0.x-dev",
-        "ibexa/doctrine-schema": "~5.0.x-dev",
-        "symfony/config": "^5.4",
-        "symfony/dependency-injection": "^5.4",
-        "symfony/event-dispatcher": "^5.4",
-        "symfony/http-foundation": "^5.4",
-        "symfony/http-kernel": "^5.4",
-        "symfony/yaml": "^5.4"
+        "ibexa/core": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "ibexa/doctrine-schema": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
+        "symfony/config": "^6.4",
+        "symfony/dependency-injection": "^6.4",
+        "symfony/event-dispatcher": "^6.4",
+        "symfony/http-foundation": "^6.4",
+        "symfony/http-kernel": "^6.4",
+        "symfony/yaml": "^6.4"
     },
     "require-dev": {
         "dama/doctrine-test-bundle": "^6.7",
         "ibexa/code-style": "~2.0.0",
-        "ibexa/test-core": "5.0.x-dev",
+        "ibexa/test-core": "dev-ibx-8470-symfony-6 as 5.0.x-dev",
         "phpstan/phpstan": "^1.4",
         "phpstan/phpstan-phpunit": "^1.0",
         "phpunit/phpunit": "^9.0",
-        "symfony/phpunit-bridge": "^5.4"
+        "symfony/phpunit-bridge": "^6.4"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/bundle/DependencyInjection/IbexaCorePersistenceExtension.php b/src/bundle/DependencyInjection/IbexaCorePersistenceExtension.php
index 765a091..6d0f5e8 100644
--- a/src/bundle/DependencyInjection/IbexaCorePersistenceExtension.php
+++ b/src/bundle/DependencyInjection/IbexaCorePersistenceExtension.php
@@ -16,10 +16,12 @@
 
 final class IbexaCorePersistenceExtension extends Extension
 {
-    public const TAG_DOCTRINE_GATEWAY = 'ibexa.core.persistence.doctrine_gateway';
+    public const string TAG_DOCTRINE_GATEWAY = 'ibexa.core.persistence.doctrine_gateway';
 
     /**
      * @param array<string, mixed> $configs
+     *
+     * @throws \Exception
      */
     public function load(array $configs, ContainerBuilder $container): void
     {