diff --git a/api/@internal/component/ets/custom_dialog_controller.d.ts b/api/@internal/component/ets/custom_dialog_controller.d.ts
index 31a2acefa26c74d0599373b5b822da0ca29d0d3a..fcdc33372e3e2fc178713956b1ba56255c92b70f 100644
--- a/api/@internal/component/ets/custom_dialog_controller.d.ts
+++ b/api/@internal/component/ets/custom_dialog_controller.d.ts
@@ -56,6 +56,12 @@ export declare interface CustomDialogControllerOption {
    * @since 7
    */
   customStyle?: boolean;
+
+  /**
+   * Grid count of dialog.
+   * @since 8
+   */
+   gridCount?: number;
 }
 
 /**