diff --git a/api/@ohos.util.d.ts b/api/@ohos.util.d.ts
index ea00afe0705860e3a1e29303ec61239bb45005b1..f3f42ea249fa30585f6ce7c5218294bd8d5efef8 100644
--- a/api/@ohos.util.d.ts
+++ b/api/@ohos.util.d.ts
@@ -64,10 +64,21 @@ declare namespace util {
      */
     function callbackWrapper(original: Function): (err: Object, value: Object) => void;
 
+    /**
+     * Takes a function following the common error-first callback style, i.e taking an (err, value) =>
+     * callback as the last argument, and return a function that returns promises.
+     * @since 9
+     * @syscap SystemCapability.Utils.Lang
+     * @param original asynchronous function
+     * @return return a version that returns promises
+     */
+     function promiseWrapper(original: (err: Object, value: Object) => void): Function;
+
     /**
      * Takes a function following the common error-first callback style, i.e taking an (err, value) =>
      * callback as the last argument, and return a version that returns promises.
      * @since 7
+     * @deprecated since 9
      * @syscap SystemCapability.Utils.Lang
      * @param original asynchronous function
      * @return return a version that returns promises