diff --git a/composer.json b/composer.json
index 557fc4c..f199de5 100644
--- a/composer.json
+++ b/composer.json
@@ -35,13 +35,13 @@
         "php": "^8.1",
         "doctrine/dbal": "^3.7",
         "doctrine/migrations": "^3.3",
-        "symfony/string": "^6.3"
+        "symfony/string": "^6.4|^7.0"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.9",
         "phpstan/phpstan": "1.10.50",
         "phpstan/phpstan-phpunit": "1.3.15",
         "phpunit/phpunit": "^10.4.2",
-        "symfony/var-dumper": ">=6.3.8"
+        "symfony/var-dumper": ">=6.3.8|^7.0"
     }
 }