diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java b/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java
index 9a4615cb..51d290bd 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java
@@ -16,6 +16,7 @@
 import pro.gravit.launchserver.binary.LauncherBinary;
 import pro.gravit.launchserver.config.LaunchServerConfig;
 import pro.gravit.launchserver.config.LaunchServerRuntimeConfig;
+import pro.gravit.launchserver.helper.SignHelper;
 import pro.gravit.launchserver.launchermodules.LauncherModuleLoader;
 import pro.gravit.launchserver.manangers.*;
 import pro.gravit.launchserver.manangers.hook.AuthHookManager;
@@ -40,9 +41,14 @@
 import java.lang.invoke.MethodType;
 import java.nio.file.*;
 import java.nio.file.attribute.BasicFileAttributes;
+import java.security.KeyStore;
+import java.time.Duration;
+import java.time.Instant;
+import java.time.LocalDateTime;
 import java.util.*;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 
 /**
@@ -185,6 +191,10 @@ public LaunchServer(LaunchServerDirectories directories, LaunchServerEnv env, La
         }
         launcherModuleLoader.init();
         nettyServerSocketHandler = new NettyServerSocketHandler(this);
+        if(config.sign.checkCertificateExpired) {
+            checkCertificateExpired();
+            service.scheduleAtFixedRate(this::checkCertificateExpired, 24, 24, TimeUnit.HOURS);
+        }
         // post init modules
         modulesManager.invokeEvent(new LaunchServerPostInitPhase(this));
     }
@@ -269,6 +279,25 @@ public void invoke(String... args) throws Exception {
         return commands;
     }
 
+    public void checkCertificateExpired() {
+        if(!config.sign.enabled) {
+            return;
+        }
+        try {
+            KeyStore keyStore = SignHelper.getStore(Paths.get(config.sign.keyStore), config.sign.keyStorePass, config.sign.keyStoreType);
+            Instant date = SignHelper.getCertificateExpired(keyStore, config.sign.keyAlias);
+            if(date == null) {
+                logger.debug("The certificate will expire at unlimited");
+            } else if(date.minus(Duration.ofDays(30)).isBefore(Instant.now())) {
+                logger.warn("The certificate will expire at {}", date.toString());
+            } else {
+                logger.debug("The certificate will expire at {}", date.toString());
+            }
+        } catch (Throwable e) {
+            logger.error("Can't get certificate expire date", e);
+        }
+    }
+
     private LauncherBinary binary() {
         LaunchServerLauncherExeInit event = new LaunchServerLauncherExeInit(this, null);
         modulesManager.invokeEvent(event);
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 49966b8e..f89c74c6 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java
@@ -259,6 +259,7 @@ public static class JarSignerConf {
         public String metaInfKeyName = "SIGNUMO.RSA";
         public String metaInfSfName = "SIGNUMO.SF";
         public String signAlgo = "SHA256WITHRSA";
+        public boolean checkCertificateExpired = true;
     }
 
     public static class NettyUpdatesBind {
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/helper/SignHelper.java b/LaunchServer/src/main/java/pro/gravit/launchserver/helper/SignHelper.java
index d2f16da1..582bf741 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/helper/SignHelper.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/helper/SignHelper.java
@@ -21,8 +21,11 @@
 import java.security.cert.CertificateEncodingException;
 import java.security.cert.CertificateException;
 import java.security.cert.X509Certificate;
+import java.time.Instant;
+import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Date;
 import java.util.List;
 
 public class SignHelper {
@@ -46,6 +49,24 @@ public static KeyStore getStore(Path file, String storepass, String algo) throws
         }
     }
 
+
+
+    public static Instant getCertificateExpired(KeyStore keyStore, String keyAlias) throws KeyStoreException {
+        List<Certificate> certChain = new ArrayList<>(Arrays.asList(keyStore.getCertificateChain(keyAlias)));
+        Date date = null;
+        for(var e : certChain) {
+            if(e instanceof X509Certificate x509Certificate) {
+                if(x509Certificate.getNotAfter() == null) {
+                    continue;
+                }
+                if(date == null || date.before(x509Certificate.getNotAfter())) {
+                    date = x509Certificate.getNotAfter();
+                }
+            }
+        }
+        return date == null ? null : date.toInstant();
+    }
+
     /**
      * Creates the beast that can actually sign the data (for JKS, for other make it).
      */