diff --git a/composer.json b/composer.json
index 2561596..59a2468 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
         }
     },
     "require-dev": {
-        "phpunit/phpunit": "^11.0",
+        "phpunit/phpunit": "^12.0",
         "phpstan/phpstan": "2.1.33"
     }
 }