diff --git a/composer.json b/composer.json
index 6515d1f7..603fc045 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,8 @@
         "phpunit/phpunit": "^10.0.16"
     },
     "conflict": {
-        "webmozart/assert": "<1.11.0"
+        "webmozart/assert": "<1.11.0",
+        "phpunit/phpunit": ">10.0.16"
     },
     "version": "2.x-dev",
     "autoload": {