diff --git a/composer.json b/composer.json
index ca88879..4ce80fa 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
   ],
   "require": {
     "php": ">=5.6",
-    "symfony/yaml": "^4.4|^5.2|^6.0"
+    "symfony/yaml": "^4.4|^5.2|^6.0|^7.0"
   },
   "require-dev": {
     "phpunit/phpunit": "^6.0",