diff --git a/inventories/chaosknoten/host_vars/cloud.yaml b/inventories/chaosknoten/host_vars/cloud.yaml
index 9c28d58..765a86b 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: 18.4
 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 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 }}"
diff --git a/resources/external/status/docker_compose/config/services-chaosknoten.yaml b/resources/external/status/docker_compose/config/services-chaosknoten.yaml
index 74991b7..ab426bc 100644
--- a/resources/external/status/docker_compose/config/services-chaosknoten.yaml
+++ b/resources/external/status/docker_compose/config/services-chaosknoten.yaml
@@ -57,6 +57,33 @@ endpoints:
       # apparently TXT records aren't supported yet.
       # - "[BODY] == ________________gatus_test_________________"
 
+  - name: auth-dns (hamburg.ccc.de)
+    url: "auth-dns.hamburg.ccc.de"
+    <<: *services_chaosknoten_defaults
+    dns:
+      query-name: "hamburg.ccc.de"
+      query-type: "A"
+    conditions:
+      - "[DNS_RCODE] == NOERROR"
+
+  - name: auth-dns (eh22.easterhegg.eu)
+    url: "auth-dns.hamburg.ccc.de"
+    <<: *services_chaosknoten_defaults
+    dns:
+      query-name: "eh22.easterhegg.eu"
+      query-type: "A"
+    conditions:
+      - "[DNS_RCODE] == NOERROR"
+
+  - name: auth-dns (club-assistant.ccchh.net)
+    url: "auth-dns.hamburg.ccc.de"
+    <<: *services_chaosknoten_defaults
+    dns:
+      query-name: "club-assistant.ccchh.net"
+      query-type: "AAAA"
+    conditions:
+      - "[DNS_RCODE] == NOERROR"
+
   - name: CCCHH ID/Keycloak (main page/account console)
     url: "https://id.hamburg.ccc.de/"
     <<: *services_chaosknoten_defaults
diff --git a/resources/external/status/docker_compose/config/websites.yaml b/resources/external/status/docker_compose/config/websites.yaml
index 78426f6..7ac34a2 100644
--- a/resources/external/status/docker_compose/config/websites.yaml
+++ b/resources/external/status/docker_compose/config/websites.yaml
@@ -76,6 +76,14 @@ endpoints:
       - "[CERTIFICATE_EXPIRATION] > 48h"
       - "[BODY] == pat(*Digitale Selbstverteidigung in Hamburg*)"
 
+  - name: diday.org
+    url: "https://diday.org"
+    <<: *websites_defaults
+    conditions:
+      - "[STATUS] == 200"
+      - "[CERTIFICATE_EXPIRATION] > 48h"
+      - "[BODY] == pat(*DIDay*)"
+
   - name: element-admin.hamburg.ccc.de
     url: "https://element-admin.hamburg.ccc.de"
     <<: *websites_defaults