diff --git a/inventories/chaosknoten/host_vars/ccchoir.yaml b/inventories/chaosknoten/host_vars/ccchoir.yaml
index 6bd3091..7b7d572 100644
--- a/inventories/chaosknoten/host_vars/ccchoir.yaml
+++ b/inventories/chaosknoten/host_vars/ccchoir.yaml
@@ -12,6 +12,3 @@ nginx__version_spec: ""
 nginx__configurations:
   - name: ccchoir.de
     content: "{{ lookup('ansible.builtin.file', 'resources/chaosknoten/ccchoir/nginx/ccchoir.de.conf') }}"
-
-# renovate: datasource=docker depName=docker.io/library/wordpress
-host_ccchoir__docker_compose__wordpress_version: 7.0.2-apache
diff --git a/inventories/chaosknoten/host_vars/cloud.yaml b/inventories/chaosknoten/host_vars/cloud.yaml
index 8f299b2..4f797e6 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: 34
 # renovate: datasource=docker depName=docker.io/library/postgres
-nextcloud__postgres_version: 15.18
+nextcloud__postgres_version: 18.4
 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/lists/docker_compose/compose.yaml.j2 b/resources/chaosknoten/lists/docker_compose/compose.yaml.j2
index db605b5..58d1ed5 100644
--- a/resources/chaosknoten/lists/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/lists/docker_compose/compose.yaml.j2
@@ -62,7 +62,7 @@ services:
       - POSTGRES_DB=mailmandb
       - POSTGRES_USER=mailman
       - "POSTGRES_PASSWORD={{ secret__lists__postgres_password }}"
-    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 dea2dfb..ccc49ba 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 }}"