diff --git a/composer.json b/composer.json
index 43a0f0b..7d754fd 100644
--- a/composer.json
+++ b/composer.json
@@ -32,7 +32,7 @@
     "nikic/php-parser": "^5.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "9.5.10",
+    "phpunit/phpunit": "12.4.1",
     "squizlabs/php_codesniffer": "3.6.2",
     "mockery/mockery": "1.6.7",
     "php-coveralls/php-coveralls": "2.7.0",