diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index b6e693d..384d0a0 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -3,7 +3,7 @@
 <!-- https://phpunit.readthedocs.io/en/8.0/ -->
 <phpunit
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/4.8/phpunit.xsd"
+        xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/8.0/phpunit.xsd"
         bootstrap="vendor/autoload.php"
         colors="true"
         executionOrder="random"