diff --git a/phpunit.xml b/phpunit.xml
index 57ccbd1..8d4b11e 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/8.0/phpunit.xsd"
+    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/7.0/phpunit.xsd"
     bootstrap="vendor/autoload.php"
     colors="true"
 >