diff --git a/source b/source
index 98319d15ad9..8bc6069849d 100644
--- a/source
+++ b/source
@@ -95410,6 +95410,7 @@ dictionary <dfn dictionary>NavigateEventInit</dfn> : <span>EventInit</span> {
   DOMString? <dfn dict-member for="NavigateEventInit" data-x="dom-NavigateEventInit-downloadRequest">downloadRequest</dfn> = null;
   any <dfn dict-member for="NavigateEventInit" data-x="dom-NavigateEventInit-info">info</dfn>;
   boolean <dfn dict-member for="NavigateEventInit" data-x="dom-NavigateEventInit-hasUAVisualTransition">hasUAVisualTransition</dfn> = false;
+  Element? <dfn dict-member for="NavigateEventInit" data-x="dom-NavigateEventInit-sourceElement">sourceElement</dfn> = null;
 };
 
 dictionary <dfn dictionary>NavigationInterceptOptions</dfn> {