diff --git a/tasks/prepare.yml b/tasks/prepare.yml
index f28a50c..1fc7f3b 100644
--- a/tasks/prepare.yml
+++ b/tasks/prepare.yml
@@ -15,6 +15,7 @@
       - "java-{{ unifi_openjdk_version }}-openjdk"
       - unzip
       - wget
+      - pyOpenSSL
 
   - name: Create group '{{ unifi_group }}'
     group: