diff --git a/src/main/java/lion/Externel/BackupSubServer.java b/src/main/java/lion/Externel/BackupSubServer.java
index 71b5fb9..ba4611c 100644
--- a/src/main/java/lion/Externel/BackupSubServer.java
+++ b/src/main/java/lion/Externel/BackupSubServer.java
@@ -14,8 +14,7 @@ import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.time.LocalDateTime;
 import java.util.*;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
+import java.util.concurrent.*;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -27,12 +26,8 @@ public class BackupSubServer {
 
     public static void main(String[] args) {
         updateSub();
-        ExecutorService threadPool = Executors.newFixedThreadPool(3600);
-        threadPool.submit(() -> {
-            if(LocalDateTime.now().getHour() == 0){
-                updateSub();
-            }
-        });
+        ScheduledExecutorService threadPool = Executors.newScheduledThreadPool(1);
+        threadPool.scheduleAtFixedRate(BackupSubServer::updateSub, 0, 12, TimeUnit.HOURS);
 
         String ip = "";
         try(ServerSocket serverSocket = new ServerSocket(8889)) {