diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index fa749154c..8687bc4ee 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -10090,7 +10090,7 @@ interface HTMLElement extends Element, ElementCSSInlineStyle, ElementContentEdit
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/draggable) */
     draggable: boolean;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/hidden) */
-    hidden: boolean;
+    hidden: boolean | "until-found";
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/inert) */
     inert: boolean;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/innerText) */
diff --git a/inputfiles/overridingTypes.jsonc b/inputfiles/overridingTypes.jsonc
index 21924841b..b4eeec7d7 100644
--- a/inputfiles/overridingTypes.jsonc
+++ b/inputfiles/overridingTypes.jsonc
@@ -484,9 +484,7 @@
                 "properties": {
                     "property": {
                         "hidden": {
-                            // https://github.com/whatwg/html/pull/7475
-                            // Revisit when this get browser supports.
-                            "overrideType": "boolean",
+                            "overrideType": "boolean | \"until-found\"",
                             "nullable": false
                         }
                     }