diff --git a/composer.json b/composer.json
index aa6ac304..bf9eeb13 100644
--- a/composer.json
+++ b/composer.json
@@ -35,7 +35,7 @@
         "laminas/laminas-diactoros": "^3.5.0",
         "php-http/curl-client": "^2.3.3",
         "php-http/mock-client": "^1.6.1",
-        "phpunit/phpunit": "^11.5.6",
+        "phpunit/phpunit": "^12.0.1",
         "psalm/plugin-phpunit": "^0.19.2",
         "squizlabs/php_codesniffer": "^3.11.3",
         "vimeo/psalm": "^6.3.0"