diff --git a/roles/nextcloud/defaults/main.yml b/roles/nextcloud/defaults/main.yml
index b13c471..732cb18 100644
--- a/roles/nextcloud/defaults/main.yml
+++ b/roles/nextcloud/defaults/main.yml
@@ -1,8 +1,8 @@
 ---
 # set preferred application version
-nextcloud_version: 29-fpm-alpine
+nextcloud_version: 30-fpm-alpine
 # set preferred postgres version
-nextcloud_db_version: 12-alpine
+nextcloud_db_version: 16-alpine
 
 nextcloud_upstream_file_dir: "{{ docker_stack_files_dir }}/{{ stack_name }}"
 
diff --git a/roles/nextcloud/tasks/main.yml b/roles/nextcloud/tasks/main.yml
index 8275a71..05e9c38 100644
--- a/roles/nextcloud/tasks/main.yml
+++ b/roles/nextcloud/tasks/main.yml
@@ -16,14 +16,12 @@
     state: directory
     mode: "0755"
   become: true
-  notify: "update nextcloud upstream"
 
 - name: Move webserver Caddyfile to target dir
   ansible.builtin.copy:
     src: "Caddyfile"
     dest: "{{ nextcloud_upstream_file_dir }}/Caddyfile"
   become: true
-  notify: "update nextcloud upstream"
 
 - name: Deploy to swarm
   community.general.docker_stack:
@@ -35,4 +33,3 @@
   become: true
   tags:
     - docker-swarm
-  notify: "update nextcloud upstream"
diff --git a/roles/nextcloud/templates/docker-stack.yml.j2 b/roles/nextcloud/templates/docker-stack.yml.j2
index 36526bc..80f28fa 100644
--- a/roles/nextcloud/templates/docker-stack.yml.j2
+++ b/roles/nextcloud/templates/docker-stack.yml.j2
@@ -142,6 +142,24 @@ services:
     networks:
       - backend
 
+  # from https://okxo.de/speed-up-nextcloud-preview-generation-with-imaginary/
+  # and https://github.com/nextcloud/all-in-one/tree/main/Containers/imaginary
+  imaginary:
+    image: nextcloud/aio-imaginary:latest
+    environment:
+      - PORT=9000
+    healthcheck:
+      test: ["CMD", "/healthcheck.sh"]
+      interval: 1m
+      timeout: 10s
+      retries: 3
+      start_period: 1m
+    command: -return-size -max-allowed-resolution 222.2 -concurrency 50 -enable-url-source -log-level debug
+    cap_add:
+      - CAP_SYS_NICE
+    networks:
+      - backend
+
   # metrics:
   #   image: telegraf
   #   hostname: "${HOSTNAME:-vmi352583.contaboserver.net}"