diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 08392a5..38336aa 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -2,7 +2,7 @@
 <!-- https://phpunit.readthedocs.io/en/stable/configuration.html -->
 <phpunit
     xmlns:xsi                     = "http://www.w3.org/2001/XMLSchema-instance"
-    xsi:noNamespaceSchemaLocation = "https://schema.phpunit.de/9.3/phpunit.xsd"
+    xsi:noNamespaceSchemaLocation = "vendor/phpunit/phpunit/phpunit.xsd"
     colors                        = "true"
     bootstrap                     = "vendor/autoload.php">