diff --git a/composer.json b/composer.json
index f35db3f..16fad5e 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
         "react/http": "^1.8",
         "reactivex/rxphp": "^2.0",
         "ringcentral/psr7": "^1.3",
-        "symfony/yaml": "^6.0",
+        "symfony/yaml": "^6.0 || ^7.0",
         "twig/twig": "^3.5",
         "wyrihaximus/async-test-utilities": "^7.0",
         "wyrihaximus/composer-update-bin-autoload-path": "^1",