diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 6a3d354..501d0c4 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,4 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <phpunit
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/9.0/phpunit.xsd"
 	bootstrap="Tests/bootstrap.php"
 	printerClass="LimeDeck\Testing\Printer"
 	convertErrorsToExceptions="true"