diff --git a/composer.json b/composer.json
index 565372a..746c8b9 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,7 @@
     "require-dev": {
         "phpstan/phpstan": "^0.12.32",
         "phpstan/phpstan-phpunit": "^0.12",
-        "phpunit/phpunit": "^8.3 || ^9",
+        "phpunit/phpunit": "^11.3.5",
         "squizlabs/php_codesniffer": "^3.6"
     },
     "scripts": {