diff --git a/source b/source
index 864a982e0de..05f6d597bc8 100644
--- a/source
+++ b/source
@@ -50931,6 +50931,8 @@ ldh-str       = &lt; as defined in <a href="https://www.rfc-editor.org/rfc/rfc10
    <li>The element's <span>form owner</span> changes.</li>
 
    <li><span data-x="signal a type change">A type change is signalled</span> for the element.</li>
+
+   <li>The element <span>becomes connected</span>.</li>
   </ul>
 
   <p>The <span>input activation behavior</span> is to run the following steps:</p>