diff --git a/inventories/z9/hosts.yaml b/inventories/z9/hosts.yaml
index 9f4a692..9d5bb09 100644
--- a/inventories/z9/hosts.yaml
+++ b/inventories/z9/hosts.yaml
@@ -4,7 +4,7 @@ all:
       ansible_host: authoritative-dns.z9.ccchh.net
       ansible_user: chaos
     dooris:
-      ansible_host: dooris.z9.ccchh.net
+      ansible_host: 10.31.208.201
       ansible_user: chaos
     light:
       ansible_host: light.z9.ccchh.net
diff --git a/resources/chaosknoten/ccchoir/docker_compose/compose.yaml.j2 b/resources/chaosknoten/ccchoir/docker_compose/compose.yaml.j2
index ffe491b..ec624ee 100644
--- a/resources/chaosknoten/ccchoir/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/ccchoir/docker_compose/compose.yaml.j2
@@ -17,7 +17,7 @@ services:
     restart: unless-stopped
 
   app:
-    image: docker.io/library/wordpress:6-php8.1@sha256:75f79f9c45a587b283e47fd21c6e51077d0c9dbbba529377faaa0c28d5b8f5a4
+    image: docker.io/library/wordpress:6-php8.1@sha256:af4fda0f8a9eac9e3aa1c85a821c8b0f54124cad19456389bf53dc96a382449c
     environment:
       - "WORDPRESS_DB_HOST=database"
       - "WORDPRESS_DB_NAME=wordpress"
diff --git a/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2 b/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2
index d91a254..383087d 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:15.14@sha256:424e79b81868f5fc5cf515eaeac69d288692ebcca7db86d98f91b50d4bce64bb
+    image: docker.io/library/postgres:15.14@sha256:822f8795764a670160640888508b2a68ea5c4b045012c2de17e1d0447bdbdc99
     restart: unless-stopped
     networks:
       - keycloak
diff --git a/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2 b/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
index 243a468..874e785 100644
--- a/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
@@ -23,7 +23,7 @@ services:
       - pretalx_net
 
   static:
-    image: docker.io/library/nginx:1.29.3@sha256:f547e3d0d5d02f7009737b284abc87d808e4252b42dceea361811e9fc606287f
+    image: docker.io/library/nginx:1.29.3@sha256:1beed3ca46acebe9d3fb62e9067f03d05d5bfa97a00f30938a0a3580563272ad
     restart: unless-stopped
     volumes:
       - public:/usr/share/nginx/html
diff --git a/roles/deploy_ssh_server_config/templates/sshd_config.j2 b/roles/deploy_ssh_server_config/templates/sshd_config.j2
index 307f213..eefafa4 100644
--- a/roles/deploy_ssh_server_config/templates/sshd_config.j2
+++ b/roles/deploy_ssh_server_config/templates/sshd_config.j2
@@ -17,15 +17,7 @@ HostKey /etc/ssh/ssh_host_ed25519_key
 HostKey /etc/ssh/ssh_host_rsa_key
 HostKey /etc/ssh/ssh_host_ecdsa_key
 
-
-{% if ansible_facts["distribution"] == "Debian" and ansible_facts["distribution_major_version"] == "13" %}
-KexAlgorithms mlkem768x25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256
-{% elif ansible_facts["distribution"] == "Debian" and ansible_facts["distribution_major_version"] == "12" %}
-KexAlgorithms sntrup761x25519-sha512,curve25519-sha256@libssh.org,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256
-{% else %}
 KexAlgorithms curve25519-sha256@libssh.org,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256
-{% endif %}
-
 
 Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr
 
diff --git a/roles/foobazdmx/meta/main.yaml b/roles/foobazdmx/meta/main.yaml
new file mode 100644
index 0000000..386685c
--- /dev/null
+++ b/roles/foobazdmx/meta/main.yaml
@@ -0,0 +1,8 @@
+---
+dependencies:
+  - role: distribution_check
+    vars:
+      distribution_check__distribution_support_spec:
+        - name: Debian
+          major_versions:
+            - "11"
diff --git a/roles/foobazdmx/tasks/main.yaml b/roles/foobazdmx/tasks/main.yaml
index 33197b5..f6e6097 100644
--- a/roles/foobazdmx/tasks/main.yaml
+++ b/roles/foobazdmx/tasks/main.yaml
@@ -7,7 +7,11 @@
       - python3
       - python3-pip
       - python3-setuptools
-      - python3-poetry
+
+- name: Ensure python peotry is installed
+  become: true
+  ansible.builtin.pip:
+    name: poetry
 
 - name: Ensure foobazdmx user exists
   become: true
diff --git a/roles/ola/meta/main.yaml b/roles/ola/meta/main.yaml
new file mode 100644
index 0000000..386685c
--- /dev/null
+++ b/roles/ola/meta/main.yaml
@@ -0,0 +1,8 @@
+---
+dependencies:
+  - role: distribution_check
+    vars:
+      distribution_check__distribution_support_spec:
+        - name: Debian
+          major_versions:
+            - "11"