diff --git a/Extensions.swift b/Extensions.swift
index 8c66a06c5..33d2c7497 100644
--- a/Extensions.swift
+++ b/Extensions.swift
@@ -86,7 +86,8 @@ extension AgoraRtcRemoteAudioStats {
             "totalActiveTime": totalActiveTime,
             "publishDuration": publishDuration,
             "qoeQuality": qoeQuality,
-            "qualityChangedReason": qualityChangedReason
+            "qualityChangedReason": qualityChangedReason,
+            "mosValue": mosValue
         ]
     }
 }
diff --git a/RtcEngine.swift b/RtcEngine.swift
index f840ac41a..805d92748 100644
--- a/RtcEngine.swift
+++ b/RtcEngine.swift
@@ -220,6 +220,8 @@ protocol RtcEngineVoiceChangerInterface {
     func setAudioEffectPreset(_ params: NSDictionary, _ callback: Callback)
 
     func setVoiceBeautifierPreset(_ params: NSDictionary, _ callback: Callback)
+    
+    func setVoiceConversionPreset(_ params: NSDictionary, _ callback: Callback)
 
     func setAudioEffectParameters(_ params: NSDictionary, _ callback: Callback)
     
@@ -754,6 +756,10 @@ class RtcEngineManager: NSObject, RtcEngineInterface {
         callback.code(engine?.setVoiceBeautifierPreset(AgoraVoiceBeautifierPreset(rawValue: params["preset"] as! Int)!))
     }
     
+    @objc func setVoiceConversionPreset(_ params: NSDictionary, _ callback: Callback) {
+        callback.code(engine?.setVoiceConversionPreset(AgoraVoiceConversionPreset(rawValue: params["preset"] as! Int)!))
+    }
+    
     @objc func setAudioEffectParameters(_ params: NSDictionary, _ callback: Callback) {
         callback.code(engine?.setAudioEffectParameters(AgoraAudioEffectPreset(rawValue: params["preset"] as! Int)!, param1: params["param1"] as! Int32, param2: params["param2"] as! Int32))
     }