diff --git a/src/Metadata/Metadata.php b/src/Metadata/Metadata.php
index 91263d7001..9668b04a20 100644
--- a/src/Metadata/Metadata.php
+++ b/src/Metadata/Metadata.php
@@ -16,7 +16,7 @@
 use ApiPlatform\State\OptionsInterface;
 
 /**
- * @internal
+ * @psalm-inheritors ApiResource|Operation
  */
 abstract class Metadata
 {