diff --git a/api/@ohos.update.d.ts b/api/@ohos.update.d.ts
index 7c0c767c007594eb1642ab3d4c344a81d30525c5..b4d5fb04fc219ce21db1681916702b0f0a4822a0 100644
--- a/api/@ohos.update.d.ts
+++ b/api/@ohos.update.d.ts
@@ -27,7 +27,7 @@ declare namespace update {
      * Get online update handler for the calling device.
      *
      * @param upgradeInfo indicates client app and business type
-     * @return online update handler to perform online update
+     * @returns online update handler to perform online update.
      * @throws { BusinessError } 201 - Permission denied.
      * @throws { BusinessError } 11500104 - IPC error.
      * @since 9
@@ -37,7 +37,7 @@ declare namespace update {
     /**
      * Get restore handler.
      *
-     * @return restore handler to perform factory reset
+     * @returns restore handler to perform factory reset.
      * @throws { BusinessError } 201 - Permission denied.
      * @throws { BusinessError } 11500104 - IPC error.
      * @since 9
@@ -47,7 +47,7 @@ declare namespace update {
     /**
      * Get local update handler.
      *
-     * @return local update handler to perform local update
+     * @returns local update handler to perform local update.
      * @throws { BusinessError } 201 - Permission denied.
      * @throws { BusinessError } 11500104 - IPC error.
      * @since 9