diff --git a/ansible/pre-deploy.yml b/ansible/pre-deploy.yml
index c51b01a..880e0ef 100644
--- a/ansible/pre-deploy.yml
+++ b/ansible/pre-deploy.yml
@@ -8,6 +8,12 @@
         extensions:
           - yml
 
+    - name: Install Python system dependencies
+      become: true
+      apt:
+        name: python3-lexicon
+        state: present
+
     - name: "Create {{ domain }} DNS entry"
       gandi_dns:
         gandi_rest_token: "{{ gandi_rest_token }}"