diff --git a/composer.json b/composer.json
index 84c20cc..7096841 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,7 @@
         "phpstan/phpstan": "^2.0.0",
         "phpstan/phpstan-phpunit": "^2.0.0",
         "phpstan/phpstan-strict-rules": "^2.0.0",
-        "phpunit/phpunit": "^11.0",
+        "phpunit/phpunit": "^12.0",
         "psr-mock/http": "^1.0"
     },
     "config": {