diff --git a/composer.json b/composer.json
index 3843c04f..05f72710 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
         "psr/http-message": "^1.0",
         "psr/http-client": "^1.0",
         "php-http/httplug": "^1.1 || ^2.0",
-        "symfony/options-resolver": "^3.4 || ^4.0 || ^5.0",
+        "symfony/options-resolver": "^3.4 || ^4.0 || ^5.0 || ^6.0",
         "psr/http-factory": "^1.0"
     },
     "require-dev": {