diff --git a/ansible-create_mailrelay.yml b/ansible-create_mailrelay.yml
index b8e1b0a..bd1e1d6 100644
--- a/ansible-create_mailrelay.yml
+++ b/ansible-create_mailrelay.yml
@@ -9,6 +9,12 @@
     certificate_subject: "/C=DE/ST=Germany/L=NRW/O=Asmodee Group/OU=Mail-Relay/CN=localhost/name=Mail-Relay/emailAddress=it-admin@asmodee.de"
 
   tasks:
+    - name: Stelle sicher, dass die 'cryptography' Bibliothek installiert ist
+      ansible.builtin.pip:
+        name: cryptography
+        version: '>=1.2.3'
+      become: yes
+
     - name: Create necessary directories
       file:
         path: "{{ item }}"