diff --git a/php/composer.json b/php/composer.json
index b85e7eeb0..1bcf0ebee 100644
--- a/php/composer.json
+++ b/php/composer.json
@@ -18,7 +18,7 @@
         "cucumber/messages": "19.1.4 - 21"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.5",
+        "phpunit/phpunit": "^10.0",
         "vimeo/psalm": "^5.0",
         "friendsofphp/php-cs-fixer": "^3.5",
         "psalm/plugin-phpunit": "^0.18.0",