diff --git a/jqueryui/jqueryui.d.ts b/jqueryui/jqueryui.d.ts
index 26e2d6cdc..10a4e7159 100644
--- a/jqueryui/jqueryui.d.ts
+++ b/jqueryui/jqueryui.d.ts
@@ -507,7 +507,7 @@ declare module JQueryUI {
 
     interface ProgressbarOptions {
         disabled?: boolean;
-        value?: number;
+        value?: number | boolean;
     }
 
     interface ProgressbarUIParams {