diff --git a/app/src/main/java/com/nbee/echolink/utils/HeartbeatWorker.java b/app/src/main/java/com/nbee/echolink/utils/HeartbeatWorker.java
index b186e55..31f9001 100644
--- a/app/src/main/java/com/nbee/echolink/utils/HeartbeatWorker.java
+++ b/app/src/main/java/com/nbee/echolink/utils/HeartbeatWorker.java
@@ -23,6 +23,7 @@ import timber.log.Timber;
 public class HeartbeatWorker extends Worker {
     private final Context context;
     private String accessToken;
+    private String SN;
 
 
     public HeartbeatWorker(@NonNull Context context, @NonNull WorkerParameters workerParams) {
@@ -66,11 +67,13 @@ public class HeartbeatWorker extends Worker {
     }
 
     private <T>Request buildRequest(String apiUrl){
+        SN = context.getResources().getString(R.string.SN);
         accessToken = context.getResources().getString(R.string.access_token);
         DeviceInfo deviceInfo = new DeviceInfo();
         deviceInfo.setDeviceBrand(DeviceInfoUtils.getDeviceBrand());
         deviceInfo.setDeviceModel(DeviceInfoUtils.getDeviceModel());
-        deviceInfo.setAndroidVersion(DeviceInfoUtils.getDeviceAndroidVersion());
+        deviceInfo.setAndroidVersion("Android " + DeviceInfoUtils.getDeviceAndroidVersion());
+        deviceInfo.setSN(SN);
         Gson gson = new Gson();
         // 将对象转换为JSON字符串
         String json = gson.toJson(deviceInfo);