diff --git a/composer.json b/composer.json
index bff8d50..c0ff083 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
 	},
 	"require-dev": {
 		"donatj/drop": "*",
-		"phpunit/phpunit": "^8.5 | ^9.0",
+		"phpunit/phpunit": "^11.5.57",
 		"friendsofphp/php-cs-fixer": "=3.95.27",
 		"squizlabs/php_codesniffer": "^3.6",
 		"corpus/coding-standard": "^0.9.0",