diff --git a/composer.json b/composer.json
index 6755561..67378ab 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
         "symfony/console": "^3.1",
         "nikic/php-parser": "^3.0",
         "doctrine/inflector": "^1.0",
-        "symfony/options-resolver": "^3.1"
+        "symfony/options-resolver": "^4.2"
     },
     "require-dev": {
         "phpunit/phpunit": "^4.7|^5.5",