diff --git a/composer.json b/composer.json
index 7529ef7..df0cf17 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
   "require-dev": {
     "dealerdirect/phpcodesniffer-composer-installer": "^0.7.0",
     "php-stubs/wordpress-stubs": "^5.5",
-    "phpunit/phpunit": "^9.0",
+    "phpunit/phpunit": "^12.0",
     "squizlabs/php_codesniffer": "^3.4",
     "szepeviktor/phpstan-wordpress": "^1.1",
     "wp-phpunit/wp-phpunit": "^6.4",