diff --git a/composer.json b/composer.json
index 9dee9ce..7a59156 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
     ],
     "require": {},
     "require-dev": {
-        "phpunit/phpunit": "^7.5"
+        "phpunit/phpunit": "^12.0"
     },
     "config": {
         "platform": {