diff --git a/composer.json b/composer.json
index 41e9f420..37ab580c 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
     },
     "require-dev": {
         "phpstan/phpstan": "^1.2",
-        "phpunit/phpunit": "^9.6 || 10.0",
+        "phpunit/phpunit": "^9.6 || 10.0 || 12.0.4",
         "rector/rector": "^1.0.0",
         "symplify/easy-coding-standard": "^12.0"
     },