diff --git a/types/vex-js/index.d.ts b/types/vex-js/index.d.ts
index ffd1d04dbf..0635b0708a 100644
--- a/types/vex-js/index.d.ts
+++ b/types/vex-js/index.d.ts
@@ -37,6 +37,7 @@ declare namespace vex {
     close(id?: number): boolean;
     closeAll(): boolean;
     closeByID(id: number): boolean;
+    defaultOptions?: IVexOptions;
   }
 
 }