diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 65d23eb762..df24dccc08 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -4,6 +4,7 @@
     xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/8.5/phpunit.xsd"
     bootstrap="test/bootstrap-dist.php"
     colors="true"
+    failOnIncomplete="true"
     forceCoversAnnotation="true"
     verbose="true"
     executionOrder="random"