diff --git a/composer.json b/composer.json
index ee94eca..40201ee 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
   "require": {
     "roave/security-advisories": "dev-master",
     "php": ">=7.1",
-    "symfony/config": "^4.1",
+    "symfony/config": "^7.1",
     "symfony/yaml": "^4.1",
     "php-di/php-di": "^6.0",
     "adbario/php-dot-notation": "2.2.0",