diff --git a/composer.json b/composer.json
index 9090e16..408b1ba 100644
--- a/composer.json
+++ b/composer.json
@@ -21,8 +21,8 @@
     },
     "require": {
         "php": ">=5.5.9",
-        "symfony/framework-bundle": "^4.4|^5.4|^6.0",
-        "symfony/twig-bundle": "^4.4|^5.4|^6.0",
+        "symfony/framework-bundle": "^4.4|^5.4|^6.0|^7.0",
+        "symfony/twig-bundle": "^4.4|^5.4|^6.0|^7.0",
         "twig/twig": "^2.0|^3.0"
     },
     "require-dev": {
diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index 6313af8..1521fd7 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -15,7 +15,7 @@ class Configuration implements ConfigurationInterface
     /**
      * {@inheritDoc}
      */
-    public function getConfigTreeBuilder()
+    public function getConfigTreeBuilder(): TreeBuilder
     {
         $treeBuilder = new TreeBuilder('bw_active_menu_item');