diff --git a/webapp/sw.js b/webapp/sw.js
index 6be1d33..1dc322b 100644
--- a/webapp/sw.js
+++ b/webapp/sw.js
@@ -1,4 +1,4 @@
-const CACHE_NAME = 'podcast-mindmap-v1';
+const CACHE_NAME = 'podcast-mindmap-v2';
 
 // Core assets to cache immediately
 const CORE_ASSETS = [
@@ -45,6 +45,21 @@ self.addEventListener('fetch', event => {
     return;
   }
 
+  // App shell (index.html): network-first, sonst kommen Code-Updates erst beim
+  // uebernaechsten Reload an. Cache-Fallback bleibt fuer Offline-Betrieb erhalten.
+  if (url.pathname === '/' || url.pathname === '/index.html') {
+    event.respondWith(
+      fetch(event.request).then(resp => {
+        if (resp.ok) {
+          const clone = resp.clone();
+          caches.open(CACHE_NAME).then(cache => cache.put(event.request, clone));
+        }
+        return resp;
+      }).catch(() => caches.match(event.request))
+    );
+    return;
+  }
+
   // Audio files: network-first, cache on success (optional offline playback)
   if (url.pathname.startsWith('/audio/')) {
     event.respondWith(