diff --git a/resources/chaosknoten/auth-dns/zones/ccchh.net.zone b/resources/chaosknoten/auth-dns/zones/ccchh.net.zone
index 813743be..2ba51355 100644
--- a/resources/chaosknoten/auth-dns/zones/ccchh.net.zone
+++ b/resources/chaosknoten/auth-dns/zones/ccchh.net.zone
@@ -53,7 +53,7 @@ hmdooris-ccu   A    172.31.200.17
 
 club-assistant                  AAAA  2a07:c481:1:d0::a
                                 A     10.31.208.10
-_acme-challenge.club-assistant  CNAME d50ad73a-f82d-4244-87f0-6f5195b37d21.auth.acmedns.hamburg.ccc.de
+_acme-challenge.club-assistant  CNAME d50ad73a-f82d-4244-87f0-6f5195b37d21.auth.acmedns.hamburg.ccc.de.
 ;esphome                        AAAA  2a07:c481:1:d0::66
 ;zigbee2mqtt                    A     185.161.129.132
 ;light                          AAAA  2a07:c481:1:d0::16
diff --git a/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2 b/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
index dea2dfb1..3c6e5daa 100644
--- a/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
@@ -33,7 +33,7 @@ services:
       - pretalx_net
 
   pretalx:
-    image: docker.io/pretalx/standalone:v2025.1.0
+    image: docker.io/pretalx/standalone:v2026.2.1
     entrypoint: gunicorn
     command:
       - "pretalx.wsgi"
@@ -78,7 +78,7 @@ services:
       - pretalx_net
 
   celery:
-    image: docker.io/pretalx/standalone:v2025.1.0
+    image: docker.io/pretalx/standalone:v2026.2.1
     command:
       - taskworker
     restart: unless-stopped