diff --git a/src/Testing/CompositeRule.php b/src/Testing/CompositeRule.php
index c83fb047b5..d496233dd0 100644
--- a/src/Testing/CompositeRule.php
+++ b/src/Testing/CompositeRule.php
@@ -22,7 +22,7 @@ final class CompositeRule implements Rule
 	private DirectRegistry $registry;
 
 	/**
-	 * @template T of Node
+	 * @template-covariant T of Node
 	 * @param array<Rule<T>> $rules
 	 *
 	 * @api