diff --git a/composer.json b/composer.json
index 1f73f4c1..130ac4d3 100644
--- a/composer.json
+++ b/composer.json
@@ -36,12 +36,12 @@
         "doctrine/mongodb-odm": "^2.4",
         "doctrine/orm": "^2.13",
         "knplabs/knp-gaufrette-bundle": "dev-master",
-        "league/flysystem-bundle": "^2.3 || ^3.0",
+        "league/flysystem-bundle": "^2.4 || ^3.0",
         "league/flysystem-memory": "^2.0 || ^3.0",
-        "matthiasnoback/symfony-dependency-injection-test": "^4.3 || ^5.0",
+        "matthiasnoback/symfony-dependency-injection-test": "^5.1",
         "mikey179/vfsstream": "^1.6.11",
         "phpunit/phpunit": "^9.6",
-        "symfony/asset": "^5.4 || ^6.0",
+        "symfony/asset": "^5.4 || ^6.0 || ^7.0",
         "symfony/browser-kit": "^5.4 || ^6.0 || ^7.0",
         "symfony/css-selector": "^5.4 || ^6.0 || ^7.0",
         "symfony/doctrine-bridge": "^5.4 || ^6.0 || ^7.0",
diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index 34b45f84..3cfd35ce 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -104,7 +104,7 @@ private function addMappingsSection(ArrayNodeDefinition $node): void
                             ->scalarNode('uri_prefix')->defaultValue('/uploads')->end()
                             ->scalarNode('upload_destination')->isRequired()->end()
                             ->arrayNode('namer')
-                                ->isRequired()
+                                ->addDefaultsIfNotSet()
                                 ->beforeNormalization()
                                     ->ifString()
                                     ->then(static fn ($v) => ['service' => $v, 'options' => []])