diff --git a/inventories/chaosknoten/host_vars/cloud.yaml b/inventories/chaosknoten/host_vars/cloud.yaml
index 9c28d58..0a1d845 100644
--- a/inventories/chaosknoten/host_vars/cloud.yaml
+++ b/inventories/chaosknoten/host_vars/cloud.yaml
@@ -1,7 +1,7 @@
 # renovate: datasource=docker depName=git.hamburg.ccc.de/ccchh/oci-images/nextcloud
 nextcloud__version: 32
 # renovate: datasource=docker depName=docker.io/library/postgres
-nextcloud__postgres_version: 15.17
+nextcloud__postgres_version: 18.3
 nextcloud__fqdn: cloud.hamburg.ccc.de
 nextcloud__data_dir: /data/nextcloud
 nextcloud__extra_configuration: "{{ lookup('ansible.builtin.template', 'resources/chaosknoten/cloud/nextcloud/extra_configuration.config.php.j2') }}"
diff --git a/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-ccchh-critical.j2 b/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-ccchh-critical.j2
index b4afc90..7d70628 100644
--- a/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-ccchh-critical.j2
+++ b/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-ccchh-critical.j2
@@ -28,7 +28,7 @@ labels {
 
 resolved {
     tags "white_check_mark,resolved"
-    priority 2
+    updatenotification true
 }
 
 ntfy {
diff --git a/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-ccchh.j2 b/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-ccchh.j2
index 66fd9ab..7ea1123 100644
--- a/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-ccchh.j2
+++ b/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-ccchh.j2
@@ -28,7 +28,7 @@ labels {
 
 resolved {
     tags "white_check_mark,resolved"
-    priority 2
+    updatenotification true
 }
 
 ntfy {
diff --git a/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-fux-critical.j2 b/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-fux-critical.j2
index afb6cc8..f58dca9 100644
--- a/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-fux-critical.j2
+++ b/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-fux-critical.j2
@@ -28,7 +28,7 @@ labels {
 
 resolved {
     tags "white_check_mark,resolved"
-    priority 2
+    updatenotification true
 }
 
 ntfy {
diff --git a/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-fux.j2 b/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-fux.j2
index 1e506a3..3d138e9 100644
--- a/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-fux.j2
+++ b/resources/chaosknoten/grafana/docker_compose/ntfy-alertmanager-fux.j2
@@ -28,7 +28,7 @@ labels {
 
 resolved {
     tags "white_check_mark,resolved"
-    priority 2
+    updatenotification true
 }
 
 ntfy {
diff --git a/resources/chaosknoten/lists/docker_compose/compose.yaml b/resources/chaosknoten/lists/docker_compose/compose.yaml
index fb65594..65248bb 100644
--- a/resources/chaosknoten/lists/docker_compose/compose.yaml
+++ b/resources/chaosknoten/lists/docker_compose/compose.yaml
@@ -58,7 +58,7 @@ services:
       - POSTGRES_DB=mailmandb
       - POSTGRES_USER=mailman
       - POSTGRES_PASSWORD=wvQjbMRnwFuxGEPz
-    image: docker.io/library/postgres:12-alpine
+    image: docker.io/library/postgres:18-alpine
     volumes:
       - /opt/mailman/database:/var/lib/postgresql/data
     networks:
diff --git a/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2 b/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
index 0bbfcb8..091bd44 100644
--- a/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
@@ -3,7 +3,7 @@
 
 services:
   database:
-    image: docker.io/library/postgres:15-alpine
+    image: docker.io/library/postgres:18-alpine
     environment:
       - "POSTGRES_USER=pretalx"
       - "POSTGRES_PASSWORD={{ secret__pretalx_db_password }}"