diff --git a/composer.json b/composer.json
index cd272a2..5f29766 100644
--- a/composer.json
+++ b/composer.json
@@ -13,6 +13,8 @@
     "require-dev": {
         "symfony/symfony": "~6.0",
         "monolog/monolog": "^1.24",
-        "guzzlehttp/guzzle": "~6.0"
+        "guzzlehttp/guzzle": "~6.0",
+        "phpstan/phpstan": "^0.12.0@dev",
+        "vimeo/psalm": "3.x-dev"
     }
 }