diff --git a/doc/go1.18.html b/doc/go1.18.html
index 2ec5fae8c7..5f6476908a 100644
--- a/doc/go1.18.html
+++ b/doc/go1.18.html
@@ -103,6 +103,11 @@ Do not send CLs removing the interior tags from such phrases.
       embedding a type parameter in an interface type is not permitted.
       Whether these will ever be permitted is unclear at present.
     </li>
+    <li>
+      A union element with more than one term may not contain an
+      interface type with a non-empty method set. Whether this will
+      ever be permitted is unclear at present.
+    </li>
   </ul>
 </p>