diff --git a/.env.development b/.env.development
index f6f7f61..bb67e0d 100644
--- a/.env.development
+++ b/.env.development
@@ -6,6 +6,6 @@ NEXT_PUBLIC_USE_MOCK_BACKEND_LOOP_START=false
 NEXT_PUBLIC_EXPORT_STATIC=false
 NEXT_PUBLIC_USE_CGI=false
 # App-Versionsnummer
-NEXT_PUBLIC_APP_VERSION=1.6.855
+NEXT_PUBLIC_APP_VERSION=1.6.856
 NEXT_PUBLIC_CPL_MODE=json   # json (Entwicklungsumgebung) oder jsSimulatedProd (CPL ->CGI-Interface-Simulator) oder production (CPL-> CGI-Interface Platzhalter)
 
diff --git a/.env.production b/.env.production
index 38ed96b..14d6a12 100644
--- a/.env.production
+++ b/.env.production
@@ -5,5 +5,5 @@ NEXT_PUBLIC_CPL_API_PATH=/CPL
 NEXT_PUBLIC_EXPORT_STATIC=true
 NEXT_PUBLIC_USE_CGI=true
 # App-Versionsnummer
-NEXT_PUBLIC_APP_VERSION=1.6.855
+NEXT_PUBLIC_APP_VERSION=1.6.856
 NEXT_PUBLIC_CPL_MODE=production
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0259c61..ef1fc76 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## [1.6.856] – 2025-09-08
+
+- chore: Jenkinsfile
+
+---
 ## [1.6.855] – 2025-09-05
 
 - fix: allow scripts in woodpecker
diff --git a/components/header/Header.tsx b/components/header/Header.tsx
index 81f706b..4458bcf 100644
--- a/components/header/Header.tsx
+++ b/components/header/Header.tsx
@@ -1,5 +1,5 @@
 "use client"; // components/Header.jsx
-import React, { useState, useEffect } from "react";
+import React, { useState, useEffect, useRef, useCallback } from "react";
 import { Icon } from "@iconify/react";
 import Image from "next/image";
 import { useRouter } from "next/router";
@@ -15,16 +15,18 @@ function Header() {
   const router = useRouter();
   const [showSettingsModal, setShowSettingsModal] = useState(false);
   const [isAdminLoggedIn, setIsAdminLoggedIn] = useState(false);
+  const autoLogoutTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
   // Removed duplicate declaration of deviceName
 
   const handleCloseSettingsModal = () => setShowSettingsModal(false);
 
-  const handleLogout = () => {
+  const handleLogout = useCallback(() => {
     sessionStorage.removeItem("token"); // Token entfernen
     localStorage.setItem("isAdminLoggedIn", "false"); // Admin-Status entfernen
+    localStorage.removeItem("adminLoginTime"); // Login-Zeitpunkt entfernen
     setIsAdminLoggedIn(false); // Zustand sofort aktualisieren
     router.push("/offline.html"); // Weiterleitung
-  };
+  }, [router]);
 
   useEffect(() => {
     // Initialer Check beim Laden der Komponente
@@ -43,6 +45,56 @@ function Header() {
       clearInterval(interval); // Intervall stoppen, wenn die Komponente entladen wird
     };
   }, [isAdminLoggedIn]);
+
+  // Auto-Logout nach 1 Minute (Test): nutzt adminLoginTime aus localStorage
+  useEffect(() => {
+    // Timer bereinigen, wenn sich der Status ändert
+    if (autoLogoutTimerRef.current) {
+      clearTimeout(autoLogoutTimerRef.current);
+      autoLogoutTimerRef.current = null;
+    }
+
+    if (!isAdminLoggedIn) return;
+
+    const iso = localStorage.getItem("adminLoginTime");
+    const loginTime = iso ? new Date(iso).getTime() : Date.now();
+    if (!iso) {
+      // Falls älterer Login ohne Zeitstempel, setze jetzt
+      try {
+        localStorage.setItem(
+          "adminLoginTime",
+          new Date(loginTime).toISOString()
+        );
+      } catch {
+        void 0; // ignore write errors (e.g., storage disabled)
+      }
+    }
+
+    // 1 Minute ab Login (60_000 ms), eine Stunde (3_600_000 ms) im Produktivbetrieb
+    const target = loginTime + 3_600_000;
+    const delay = Math.max(0, target - Date.now());
+
+    // Fallback: wenn Datum in Vergangenheit (z.B. Uhrzeit geändert), sofort abmelden
+    autoLogoutTimerRef.current = setTimeout(() => {
+      // Versuche den Button zu klicken, falls vorhanden
+      const btn = document.querySelector<HTMLButtonElement>(
+        'button[aria-label="Abmelden"]'
+      );
+      if (btn) {
+        btn.click();
+      } else {
+        // Fallback direkt
+        handleLogout();
+      }
+    }, delay);
+
+    return () => {
+      if (autoLogoutTimerRef.current) {
+        clearTimeout(autoLogoutTimerRef.current);
+        autoLogoutTimerRef.current = null;
+      }
+    };
+  }, [isAdminLoggedIn, handleLogout]);
   //----------------------------------------------------------------
   const dispatch = useDispatch<AppDispatch>();
 
@@ -139,6 +191,7 @@ function Header() {
           <div className="flex items-center justify-end w-1/4 space-x-1">
             <button
               onClick={handleLogout}
+              aria-label="Abmelden"
               className="bg-littwin-blue text-white px-4 py-2 rounded"
             >
               Abmelden
diff --git a/components/main/settingsPageComponents/UserManagementSettings.tsx b/components/main/settingsPageComponents/UserManagementSettings.tsx
index 62787aa..560eb6d 100644
--- a/components/main/settingsPageComponents/UserManagementSettings.tsx
+++ b/components/main/settingsPageComponents/UserManagementSettings.tsx
@@ -22,6 +22,12 @@ const UserManagementSettings: React.FC = () => {
       () => {
         setLoginSuccess(true);
         setError("");
+        // Speichere die System-Uhrzeit (Login-Zeitpunkt) im localStorage
+        try {
+          localStorage.setItem("adminLoginTime", new Date().toISOString());
+        } catch {
+          // Ignoriere Speicherfehler (z. B. in Private Mode)
+        }
       },
       (errorMsg) => {
         setLoginSuccess(false);
@@ -47,7 +53,14 @@ const UserManagementSettings: React.FC = () => {
           <button
             type="button"
             className="bg-littwin-blue text-white px-4 py-2 h-8 text-xs rounded whitespace-nowrap"
-            onClick={logoutAdmin}
+            onClick={() => {
+              try {
+                localStorage.removeItem("adminLoginTime");
+              } catch {
+                // ignore
+              }
+              logoutAdmin();
+            }}
           >
             Admin abmelden
           </button>
diff --git a/package-lock.json b/package-lock.json
index a68813d..ec0fb7e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "cpl-v4",
-  "version": "1.6.855",
+  "version": "1.6.856",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "cpl-v4",
-      "version": "1.6.855",
+      "version": "1.6.856",
       "dependencies": {
         "@fontsource/roboto": "^5.1.0",
         "@headlessui/react": "^2.2.4",
diff --git a/package.json b/package.json
index 840927e..6d7d3ba 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cpl-v4",
-  "version": "1.6.855",
+  "version": "1.6.856",
   "private": true,
   "scripts": {
     "dev": "next dev -p 3000",