diff --git a/api/@internal/component/ets/common.d.ts b/api/@internal/component/ets/common.d.ts
index fa1352b5822950a341df81b0baa2fc7ee1293a1b..690f8210bd3d95def0f453d0d4e69347615e01c4 100644
--- a/api/@internal/component/ets/common.d.ts
+++ b/api/@internal/component/ets/common.d.ts
@@ -11149,11 +11149,23 @@ declare interface BaseEvent {
    * @crossplatform
    * @form
    * @atomicservice
-   * @since arkts {'1.1':'11','1.2':'20'}
-   * @arkts 1.1&1.2
+   * @since 11
    */
   timestamp: number;
 
+  /**
+   * Event timestamp.
+   *
+   * @type { number }
+   * @syscap SystemCapability.ArkUI.ArkUI.Full
+   * @crossplatform
+   * @form
+   * @atomicservice
+   * @since 20
+   * @arkts 1.2
+   */
+  timestamp: long;
+
   /**
    * the event source info.
    *
diff --git a/api/@internal/component/ets/gesture.d.ts b/api/@internal/component/ets/gesture.d.ts
index 9cbc52b43fd320e7323ffcc36fae341aa46fe10f..7179191d87bfdab26c5f56da387915688292d61b 100644
--- a/api/@internal/component/ets/gesture.d.ts
+++ b/api/@internal/component/ets/gesture.d.ts
@@ -21,6 +21,7 @@
 /*** if arkts 1.2 */
 import { BaseEvent, SourceTool, Callback } from './common'
 import { InteractionHand } from './enums'
+import { VoidCallback } from './units';
 /*** endif */
 
 /**
@@ -3709,14 +3710,14 @@ export declare class GestureGroup {
   /**
    * The Gesture group is successfully recognized and a callback is triggered when the touch cancel event is received.
    *
-   * @param { Callback<void> } event
+   * @param { VoidCallback } event
    * @returns { GestureGroup }
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @crossplatform
    * @atomicservice
    * @since 20
    */
-  onCancel(event: Callback<void>): GestureGroup;
+  onCancel(event: VoidCallback): GestureGroup;
 }
 /*** endif */
 
@@ -5070,14 +5071,14 @@ export declare class GestureGroupHandler extends GestureHandler {
   /**
    * The GestureGroup gesture is successfully recognized and a callback is triggered when the touch cancel event is received.
    *
-   * @param { Callback<void> } event
+   * @param { VoidCallback } event
    * @returns { this }
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @crossplatform
    * @atomicservice
    * @since 20
    */
-  onCancel(event: Callback<void>): this;
+  onCancel(event: VoidCallback): this;
 }
 /*** endif */