diff --git a/composer.json b/composer.json
index 41efe95..7b8d9cc 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
     "require": {
         "php": "~8.1.0 || ~8.2.0",
         "ext-json": "*",
-        "phpunit/phpunit": "^9.6.20"
+        "phpunit/phpunit": "^11.3.6"
     },
     "config": {
         "allow-plugins": {