diff --git a/src/types/router.d.ts b/src/types/router.d.ts
index d47a8ea78..9f3063690 100644
--- a/src/types/router.d.ts
+++ b/src/types/router.d.ts
@@ -16,6 +16,7 @@ declare module 'vue-router' {
     roles?: string[];
     alwaysShow?: boolean;
     query?: string;
+    ext?: string;
     parentPath?: string;
   }