diff --git a/composer.json b/composer.json
index b9b8fc7..eb6e9cd 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
         "php-http/discovery": "^1.6",
         "php-http/httplug-bundle": "^1.17",
         "php-http/httplug": "^2.0",
-        "symfony/http-kernel": "^3.4 || ^4.0 || ^5.0"
+        "symfony/http-kernel": "^3.4 || ^4.0 || ^5.0 || ^6.0 || ^7.0"
     },
     "require-dev": {
         "http-interop/http-factory-guzzle": "^1.0",
@@ -23,7 +23,7 @@
         "php-http/guzzle6-adapter": "^1.1.1 || ^2.0",
         "php-http/mock-client": "^1.1",
         "phpunit/phpunit": "^8.4",
-        "symfony/framework-bundle": "^3.4 || ^4.4 || ^5.0"
+        "symfony/framework-bundle": "^3.4 || ^4.4 || ^5.0 || ^6.0 || ^7.0"
     },
     "suggest": {
         "eightpoints/guzzle-bundle": "Make a custom Guzzle instance for Slack with ease"
diff --git a/tests/IntegrationTest.php b/tests/IntegrationTest.php
index 0a54561..502faf9 100644
--- a/tests/IntegrationTest.php
+++ b/tests/IntegrationTest.php
@@ -48,7 +48,7 @@ public function __construct()
         parent::__construct('test', true);
     }
 
-    public function registerBundles()
+    public function registerBundles(): iterable
     {
         return [
             new FrameworkBundle(),
@@ -57,12 +57,12 @@ public function registerBundles()
         ];
     }
 
-    public function getCacheDir()
+    public function getCacheDir(): string
     {
         return sys_get_temp_dir().'/cache'.spl_object_hash($this);
     }
 
-    public function getLogDir()
+    public function getLogDir(): string
     {
         return sys_get_temp_dir().'/logs'.spl_object_hash($this);
     }