diff --git a/inventories/chaosknoten/host_vars/cloud.yaml b/inventories/chaosknoten/host_vars/cloud.yaml
index b6cf771..1164730 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: 15.15
+nextcloud__postgres_version: 18.1
 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/inventories/chaosknoten/host_vars/spaceapiccc.yaml b/inventories/chaosknoten/host_vars/spaceapiccc.yaml
index 377b909..baf5065 100644
--- a/inventories/chaosknoten/host_vars/spaceapiccc.yaml
+++ b/inventories/chaosknoten/host_vars/spaceapiccc.yaml
@@ -5,7 +5,7 @@ docker_compose__pull: never
 certbot__version_spec: ""
 certbot__acme_account_email_address: le-admin@hamburg.ccc.de
 certbot__certificate_domains:
-  # - "spaceapi.ccc.de" # after DNS has been adjusted
+  - "spaceapi.ccc.de"
   - "spaceapiccc.hamburg.ccc.de"
 certbot__new_cert_commands:
   - "systemctl reload nginx.service"
diff --git a/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2 b/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2
index a260ab1..562df5c 100644
--- a/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2
@@ -46,7 +46,7 @@ services:
       - "8080:8080"
 
   db:
-    image: docker.io/library/postgres:15.15
+    image: docker.io/library/postgres:18.1
     restart: unless-stopped
     networks:
       - keycloak
diff --git a/resources/chaosknoten/lists/docker_compose/compose.yaml b/resources/chaosknoten/lists/docker_compose/compose.yaml
index cdfd70a..7050a8b 100644
--- a/resources/chaosknoten/lists/docker_compose/compose.yaml
+++ b/resources/chaosknoten/lists/docker_compose/compose.yaml
@@ -56,7 +56,7 @@ 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/pad/docker_compose/compose.yaml.j2 b/resources/chaosknoten/pad/docker_compose/compose.yaml.j2
index 790cf95..e13191a 100644
--- a/resources/chaosknoten/pad/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/pad/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=hedgedoc"
       - "POSTGRES_PASSWORD={{ secret__hedgedoc_db_password }}"
diff --git a/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2 b/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
index 091d113..2f6f990 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/spaceapiccc/nginx/spaceapiccc.hamburg.ccc.de.conf b/resources/chaosknoten/spaceapiccc/nginx/spaceapiccc.hamburg.ccc.de.conf
index f060996..9b74c0c 100644
--- a/resources/chaosknoten/spaceapiccc/nginx/spaceapiccc.hamburg.ccc.de.conf
+++ b/resources/chaosknoten/spaceapiccc/nginx/spaceapiccc.hamburg.ccc.de.conf
@@ -12,7 +12,7 @@ server {
     # header.
     real_ip_header proxy_protocol;
 
-    server_name spaceapi.ccc.de spaceapiccc.hamburg.ccc.de;
+    server_name spaceapi.ccc.de;
 
     ssl_certificate /etc/letsencrypt/live/spaceapiccc.hamburg.ccc.de/fullchain.pem;
     ssl_certificate_key /etc/letsencrypt/live/spaceapiccc.hamburg.ccc.de/privkey.pem;
@@ -40,3 +40,44 @@ server {
         proxy_pass http://172.16.238.10/;
     }
 }
+
+server {
+    # Listen on a custom port for the proxy protocol.
+    listen [::]:8443 ssl http2 proxy_protocol;
+    # Make use of the ngx_http_realip_module to set the $remote_addr and
+    # $remote_port to the client address and client port, when using proxy
+    # protocol.
+    # First set our proxy protocol proxy as trusted.
+    set_real_ip_from 2a00:14b0:4200:3000:125::1;
+    # Then tell the realip_module to get the addreses from the proxy protocol
+    # header.
+    real_ip_header proxy_protocol;
+
+    server_name spaceapi.ccc.de;
+
+    ssl_certificate /etc/letsencrypt/live/spaceapi.ccc.de/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/spaceapi.ccc.de/privkey.pem;
+    # verify chain of trust of OCSP response using Root CA and Intermediate certs
+    ssl_trusted_certificate /etc/letsencrypt/live/spaceapiccc.hamburg.ccc.de/chain.pem;
+
+    # HSTS (ngx_http_headers_module is required) (63072000 seconds)
+    add_header Strict-Transport-Security "max-age=63072000" always;
+
+    proxy_set_header Host $host;
+    proxy_set_header X-Forwarded-Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Port 443;
+    # This is https in any case.
+    proxy_set_header X-Forwarded-Proto https;
+    # Hide the X-Forwarded header.
+    proxy_hide_header X-Forwarded;
+    # Assume we are the only Reverse Proxy (well using Proxy Protocol, but that
+    # is transparent).
+    # Also provide "_hidden" for by, since it's not relevant.
+    proxy_set_header Forwarded "for=$remote_addr;proto=https;host=$host;by=_hidden";
+
+    location / {
+        proxy_pass http://172.16.238.10/;
+    }
+}
diff --git a/resources/chaosknoten/tickets/docker_compose/compose.yaml.j2 b/resources/chaosknoten/tickets/docker_compose/compose.yaml.j2
index 938883b..3d35c0b 100644
--- a/resources/chaosknoten/tickets/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/tickets/docker_compose/compose.yaml.j2
@@ -1,7 +1,7 @@
 ---
 services:
   database:
-    image: docker.io/library/postgres:15-alpine
+    image: docker.io/library/postgres:18-alpine
     environment:
       - "POSTGRES_USER=pretix"
       - "POSTGRES_PASSWORD={{ secret__pretix_db_password }}"