diff --git a/libraries/src/Component/ComponentRecord.php b/libraries/src/Component/ComponentRecord.php
index 3b21ee01a65fd..2958e4ea33427 100644
--- a/libraries/src/Component/ComponentRecord.php
+++ b/libraries/src/Component/ComponentRecord.php
@@ -52,6 +52,8 @@ class ComponentRecord
      *
      * @var    string
      * @since  4.0.0
+     *
+     * @deprecated  5.3 will be removed in 7.0
      */
     public $namespace;