diff --git a/scripts/update.sh b/scripts/update.sh
index 8750ca9..b45350b 100644
--- a/scripts/update.sh
+++ b/scripts/update.sh
@@ -159,13 +159,21 @@ _sudoers_add(){
   chmod 440 "$file"
 }
 fix_permissions(){
+  # Eigentümer + Gruppe korrigieren
   chown -R "${APP_USER}:${APP_GROUP}" \
     "${APP_DIR}/bootstrap/cache" \
     "${APP_DIR}/storage" \
     "${APP_DIR}/public/build" 2>/dev/null || true
+  # Gruppe Schreibrecht + setgid (neue Dateien erben Gruppe automatisch)
   chmod -R ug+rwX \
     "${APP_DIR}/bootstrap/cache" \
     "${APP_DIR}/storage" 2>/dev/null || true
+  find "${APP_DIR}/bootstrap/cache" "${APP_DIR}/storage" \
+    -type d -exec chmod g+s {} \; 2>/dev/null || true
+  # Cache als www-data (PHP-FPM-User) neu aufbauen → keine Rechteprobleme
+  sudo -u "${APP_GROUP}" php "${APP_DIR}/artisan" optimize:clear --quiet 2>/dev/null || true
+  sudo -u "${APP_GROUP}" php "${APP_DIR}/artisan" config:cache  --quiet 2>/dev/null || true
+  sudo -u "${APP_GROUP}" php "${APP_DIR}/artisan" route:cache   --quiet 2>/dev/null || true
 }
 
 ensure_system(){