diff --git a/src/dialog/index.ts b/src/dialog/index.ts
index 4c826513c..e7e9cab92 100644
--- a/src/dialog/index.ts
+++ b/src/dialog/index.ts
@@ -14,6 +14,9 @@ interface DialogAlertOptionsType {
   textAlign?: string;
   cancelBtn?: string | object;
   confirmBtn?: string | object;
+  showOverlay?: boolean;
+  closeOnOverlayClick?: boolean;
+  preventScrollThrough?: boolean;
 }
 
 interface DialogConfirmOptionsType extends DialogAlertOptionsType {