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/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 }}"
diff --git a/resources/chaosknoten/public-reverse-proxy/nginx/acme_challenge.conf b/resources/chaosknoten/public-reverse-proxy/nginx/acme_challenge.conf
index 5ebed4f..2bdf9cc 100644
--- a/resources/chaosknoten/public-reverse-proxy/nginx/acme_challenge.conf
+++ b/resources/chaosknoten/public-reverse-proxy/nginx/acme_challenge.conf
@@ -6,6 +6,7 @@ map $host $upstream_acme_challenge_host {
     staging.c3cat.de 172.31.17.151:31820;
     c3dog.de 172.31.17.151:31820;
     www.c3dog.de 172.31.17.151:31820;
+    staging.c3dog.de 172.31.17.151:31820;
     ccchoir.de ccchoir.hosts.hamburg.ccc.de:31820;
     www.ccchoir.de ccchoir.hosts.hamburg.ccc.de:31820;
     cloud.hamburg.ccc.de cloud.hosts.hamburg.ccc.de:31820;
diff --git a/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf b/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf
index 8b90d3f..a7abf03 100644
--- a/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf
+++ b/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf
@@ -51,6 +51,7 @@ stream {
         staging.c3cat.de 172.31.17.151:8443;
         c3dog.de 172.31.17.151:8443;
         www.c3dog.de 172.31.17.151:8443;
+        staging.c3dog.de 172.31.17.151:8443;
         git.hamburg.ccc.de 172.31.17.154:8443;
         eh03.easterhegg.eu 172.31.17.151:8443;
         eh05.easterhegg.eu 172.31.17.151:8443;
diff --git a/resources/external/status/docker_compose/config/websites.yaml b/resources/external/status/docker_compose/config/websites.yaml
index 964a866..78426f6 100644
--- a/resources/external/status/docker_compose/config/websites.yaml
+++ b/resources/external/status/docker_compose/config/websites.yaml
@@ -52,6 +52,14 @@ endpoints:
       - "[CERTIFICATE_EXPIRATION] > 48h"
       - "[BODY] == pat(*Cat Ears Operation Center*)"
 
+  - name: c3dog.de
+    url: "https://c3dog.de"
+    <<: *websites_defaults
+    conditions:
+      - "[STATUS] == 200"
+      - "[CERTIFICATE_EXPIRATION] > 48h"
+      - "[BODY] == pat(*Dog Ears Operation Center*)"
+
   - name: cpu.ccc.de
     url: "https://cpu.ccc.de"
     <<: *websites_defaults
@@ -127,6 +135,14 @@ endpoints:
       - "[CERTIFICATE_EXPIRATION] > 48h"
       - "[BODY] == pat(*c3cat.de Staging Environment*)"
 
+  - name: staging.c3dog.de
+    url: "https://staging.c3dog.de"
+    <<: *websites_staging_defaults
+    conditions:
+      - "[STATUS] == 200"
+      - "[CERTIFICATE_EXPIRATION] > 48h"
+      - "[BODY] == pat(*c3dog.de Staging Environment*)"
+
   - name: staging.cryptoparty-hamburg.de
     url: "https://staging.cryptoparty-hamburg.de"
     <<: *websites_staging_defaults
@@ -168,6 +184,14 @@ endpoints:
       - "[CERTIFICATE_EXPIRATION] > 48h"
       - "[BODY] == pat(*Cat Ears Operation Center*)"
 
+  - name: www.c3dog.de
+    url: "https://www.c3dog.de"
+    <<: *websites_redirects_defaults
+    conditions:
+      - "[STATUS] == 200"
+      - "[CERTIFICATE_EXPIRATION] > 48h"
+      - "[BODY] == pat(*Dog Ears Operation Center*)"
+
   - name: cryptoparty.hamburg.ccc.de
     url: "https://cryptoparty.hamburg.ccc.de"
     <<: *websites_redirects_defaults