diff --git a/jqueryui/jqueryui.d.ts b/jqueryui/jqueryui.d.ts
index f4297377e..f3c9e7e42 100644
--- a/jqueryui/jqueryui.d.ts
+++ b/jqueryui/jqueryui.d.ts
@@ -73,6 +73,7 @@ interface AutocompleteEvents {
 }
 
 interface Autocomplete extends Widget, AutocompleteOptions, AutocompleteEvents {
+    escapeRegex: (string) => string;
 }