diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java b/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java
index fb16d043..2f5d8bcb 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java
@@ -50,7 +50,7 @@ public final class LaunchServerConfig {
 
     public static LaunchServerConfig getDefault(LaunchServer.LaunchServerEnv env) {
         LaunchServerConfig newConfig = new LaunchServerConfig();
-        newConfig.mirrors = new String[]{"https://mirror.gravit.pro/new/", "https://gravit-launcher-mirror.storage.googleapis.com/"};
+        newConfig.mirrors = new String[]{"https://mirror.gravit.pro/5.2.x/", "https://gravit-launcher-mirror.storage.googleapis.com/"};
         newConfig.launch4j = new LaunchServerConfig.ExeConf();
         newConfig.launch4j.enabled = true;
         newConfig.launch4j.copyright = "© GravitLauncher Team";
@@ -169,6 +169,18 @@ public void verify() {
         if (netty == null) {
             throw new NullPointerException("Netty must not be null");
         }
+        // Mirror check
+        {
+            boolean updateMirror = Boolean.getBoolean("launchserver.config.disableUpdateMirror");
+            if(!updateMirror) {
+                for(int i=0;i < mirrors.length;++i) {
+                    if("https://mirror.gravit.pro/".equals(mirrors[i])) {
+                        logger.warn("Replace mirror 'https://mirror.gravit.pro/' to 'https://mirror.gravit.pro/5.2.x/'. If you really need to use original url, use '-Dlaunchserver.config.disableUpdateMirror=true'");
+                        mirrors[i] = "https://mirror.gravit.pro/5.2.x/";
+                    }
+                }
+            }
+        }
     }
 
     public void init(LaunchServer.ReloadType type) {