diff --git a/composer.json b/composer.json
index d6a42af8..795b9089 100644
--- a/composer.json
+++ b/composer.json
@@ -31,16 +31,16 @@
         "nyholm/psr7": "^1.5",
         "phpdocumentor/reflection-docblock": "^5.3",
         "sspat/reserved-words": "^3.0",
-        "symfony/cache": "^5.3",
-        "symfony/config": "^5.3",
-        "symfony/console": "^5.3.7",
-        "symfony/dependency-injection": "^5.3.2",
-        "symfony/event-dispatcher": "^5.3",
-        "symfony/http-kernel": "^5.3.12",
-        "symfony/process": "^5.3.7",
+        "symfony/cache": "^5.3|^5.4",
+        "symfony/config": "^5.3|^5.4",
+        "symfony/console": "^5.3.7|^5.4.7",
+        "symfony/dependency-injection": "^5.3.2|^5.4.2",
+        "symfony/event-dispatcher": "^5.3|^5.4",
+        "symfony/http-kernel": "^5.3.12|^5.4.12",
+        "symfony/process": "^5.3.7|^5.4.7",
         "symfony/psr-http-message-bridge": "^2.1",
-        "symfony/routing": "^5.3.7",
-        "symfony/yaml": "^5.3",
+        "symfony/routing": "^5.3.7|^5.4.7",
+        "symfony/yaml": "^5.3|^5.4",
         "thecodingmachine/safe": "^1.3|^2"
     },
     "require-dev": {
@@ -53,9 +53,9 @@
         "phpunit/phpunit": "^9.5.13",
         "roave/infection-static-analysis-plugin": "^1.16",
         "squizlabs/php_codesniffer": "^3.6.1",
-        "symfony/browser-kit": "^5.3",
-        "symfony/dom-crawler": "^5.3.7",
-        "symfony/framework-bundle": "^5.3",
+        "symfony/browser-kit": "^5.3|^5.4",
+        "symfony/dom-crawler": "^5.3.7|^5.4.7",
+        "symfony/framework-bundle": "^5.3|^5.4",
         "thecodingmachine/phpstan-safe-rule": "^1.2",
         "vimeo/psalm": "^4.20"
     },
diff --git a/src/CodeGenerator/PhpParserGenerators/ServiceSubscriberCodeGenerator.php b/src/CodeGenerator/PhpParserGenerators/ServiceSubscriberCodeGenerator.php
index 3dc6fd8d..ba39ae45 100644
--- a/src/CodeGenerator/PhpParserGenerators/ServiceSubscriberCodeGenerator.php
+++ b/src/CodeGenerator/PhpParserGenerators/ServiceSubscriberCodeGenerator.php
@@ -89,6 +89,7 @@ public function generate(GraphDefinition $graphDefinition): GeneratedFileDefinit
             ->method('getSubscribedServices')
             ->makePublic()
             ->makeStatic()
+            ->setReturnType('array')
             ->setDocComment('/**
                                          * @inheritDoc
                                          */')
diff --git a/src/Interfaces/ResponseDto.php b/src/Interfaces/ResponseDto.php
index ce71b735..8da8f5c4 100644
--- a/src/Interfaces/ResponseDto.php
+++ b/src/Interfaces/ResponseDto.php
@@ -7,8 +7,5 @@
 // phpcs:disable PSR2.Methods.MethodDeclaration.Underscore
 interface ResponseDto extends Dto
 {
-    /**
-     * @internal
-     */
     public static function _getResponseCode(): string;
 }
diff --git a/test/unit/CodeGenerator/PhpParserGenerators/ServiceSubscriberCodeGeneratorTest.php b/test/unit/CodeGenerator/PhpParserGenerators/ServiceSubscriberCodeGeneratorTest.php
index a7a61044..6f56bb0f 100644
--- a/test/unit/CodeGenerator/PhpParserGenerators/ServiceSubscriberCodeGeneratorTest.php
+++ b/test/unit/CodeGenerator/PhpParserGenerators/ServiceSubscriberCodeGeneratorTest.php
@@ -122,7 +122,7 @@ public function __construct(ContainerInterface $locator)
     /**
      * @inheritDoc
      */
-    public static function getSubscribedServices()
+    public static function getSubscribedServices() : array
     {
         return array('test' => '?' . ClassName::class);
     }