diff --git a/installer/install.sh b/installer/install.sh
index ebc628a..09c511b 100644
--- a/installer/install.sh
+++ b/installer/install.sh
@@ -1215,3 +1215,84 @@ print_summary() {
   echo "    docker compose -p $COMPOSE_PROJECT down      # stop"
   echo ""
 }
+
+# --- Re-run and upgrade ---
+
+show_rerun_menu() {
+  local current_version
+  current_version=$(grep '^version=' "$INSTALL_DIR/cameleer.conf" 2>/dev/null | cut -d= -f2 || echo "unknown")
+  local current_host
+  current_host=$(grep '^public_host=' "$INSTALL_DIR/cameleer.conf" 2>/dev/null | cut -d= -f2 || echo "unknown")
+
+  echo ""
+  echo -e "${BOLD}Existing Cameleer installation detected (v${current_version})${NC}"
+  echo "  Install directory: $INSTALL_DIR"
+  echo "  Public host:       $current_host"
+  echo ""
+
+  if [ "$MODE" = "silent" ]; then
+    RERUN_ACTION="${RERUN_ACTION:-upgrade}"
+    return
+  fi
+
+  if [ -n "$RERUN_ACTION" ]; then return; fi
+
+  local new_version="${VERSION:-$CAMELEER_DEFAULT_VERSION}"
+  echo "  [1] Upgrade to v${new_version} (pull new images, update compose)"
+  echo "  [2] Reconfigure (re-run interactive setup, preserve data)"
+  echo "  [3] Reinstall (fresh install, WARNING: destroys data volumes)"
+  echo "  [4] Cancel"
+  echo ""
+
+  local choice
+  read -rp "  Select [1]: " choice
+  case "${choice:-1}" in
+    1) RERUN_ACTION="upgrade" ;;
+    2) RERUN_ACTION="reconfigure" ;;
+    3) RERUN_ACTION="reinstall" ;;
+    4) echo "Cancelled."; exit 0 ;;
+    *) echo "Invalid choice."; exit 1 ;;
+  esac
+}
+
+handle_rerun() {
+  case "$RERUN_ACTION" in
+    upgrade)
+      log_info "Upgrading installation..."
+      load_config_file "$INSTALL_DIR/cameleer.conf"
+      load_env_overrides
+      merge_config
+      generate_compose_file
+      docker_compose_pull
+      docker_compose_down
+      docker_compose_up
+      verify_health
+      generate_install_doc
+      print_summary
+      exit 0
+      ;;
+    reconfigure)
+      log_info "Reconfiguring installation..."
+      return
+      ;;
+    reinstall)
+      if [ "${CONFIRM_DESTROY}" != "true" ]; then
+        echo ""
+        log_warn "This will destroy ALL data (databases, certificates, bootstrap)."
+        if ! prompt_yesno "Are you sure? This cannot be undone."; then
+          echo "Cancelled."
+          exit 0
+        fi
+      fi
+      log_info "Reinstalling..."
+      docker_compose_down 2>/dev/null || true
+      (cd "$INSTALL_DIR" && docker compose -p "${COMPOSE_PROJECT:-cameleer-saas}" down -v 2>/dev/null || true)
+      rm -f "$INSTALL_DIR/.env" "$INSTALL_DIR/docker-compose.yml" \
+            "$INSTALL_DIR/cameleer.conf" "$INSTALL_DIR/credentials.txt" \
+            "$INSTALL_DIR/INSTALL.md" "$INSTALL_DIR/.env.bak"
+      rm -rf "$INSTALL_DIR/certs"
+      IS_RERUN=false
+      return
+      ;;
+  esac
+}