diff --git a/composer.json b/composer.json
index 32bd8661..b7b0ea2e 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         "ergebnis/composer-normalize": "^2.0",
         "friendsofphp/php-cs-fixer": "^3.0",
         "phpstan/phpstan": "^1.0",
-        "phpunit/phpunit": "^11.0",
+        "phpunit/phpunit": "^10.0",
         "phpspec/prophecy-phpunit": "^2.0"
     },
     "extra": {