diff --git a/multimedia/player_framework/lowpower_audio_sink.h b/multimedia/player_framework/lowpower_audio_sink.h
index 07f24a2999867ed323462567a676035cdcf3d874..3ed0476042c8e2b5014e2eedf29d010e11373abc 100644
--- a/multimedia/player_framework/lowpower_audio_sink.h
+++ b/multimedia/player_framework/lowpower_audio_sink.h
@@ -268,7 +268,7 @@ OH_AVErrCode OH_LowPowerAudioSink_ReturnSamples(OH_LowPowerAudioSink* sink, OH_A
  * otherwise, returns a specific error code as defined in {@link OH_AVErrCode}
  * {@link AV_ERR_INVALID_VAL} the sink is nullptr or loudnessGain is out of valid range.
  * {@link AV_ERR_SERVICE_DIED} media service is died.
- * @since 20
+ * @since 21
  */
 OH_AVErrCode OH_LowPowerAudioSink_SetLoudnessGain(OH_LowPowerAudioSink* sink, float loudnessGain);
 
diff --git a/multimedia/player_framework/lowpower_avsink/liblowpower_avsink.ndk.json b/multimedia/player_framework/lowpower_avsink/liblowpower_avsink.ndk.json
index 7e53713e491574d739dd5d83c218d7ebb6cf50de..13c7c7167a19509ed5400a893a2321a670982f93 100644
--- a/multimedia/player_framework/lowpower_avsink/liblowpower_avsink.ndk.json
+++ b/multimedia/player_framework/lowpower_avsink/liblowpower_avsink.ndk.json
@@ -68,7 +68,7 @@
     "name": "OH_LowPowerAudioSink_ReturnSamples"
   },
   {
-    "first_introduced": "20",
+    "first_introduced": "21",
     "name": "OH_LowPowerAudioSink_SetLoudnessGain"
   },
   {