diff --git a/composer.json b/composer.json
index 5f73896..bf1078c 100644
--- a/composer.json
+++ b/composer.json
@@ -35,9 +35,9 @@
 	"require-dev": {
 		"php-parallel-lint/php-console-highlighter": "^1.0.0",
 		"php-parallel-lint/php-parallel-lint": "^1.4.0",
-		"yoast/yoastcs": "^3.3.0"
+		"yoast/yoastcs": "^3.4.0"
 	},
-	"minimum-stability": "dev",
+	"minimum-stability": "alpha",
 	"prefer-stable": true,
 	"autoload": {
 		"classmap": [