diff --git a/tasks/preflight-checks.yml b/tasks/preflight-checks.yml
index 0fa5d5d..8e66bd7 100644
--- a/tasks/preflight-checks.yml
+++ b/tasks/preflight-checks.yml
@@ -15,6 +15,15 @@
   run_once: true
   become: false
 
+- name: "[PREFLIGHT] Ensure passlib is installed"
+  ansible.builtin.pip:
+    name: passlib
+    state: present
+    executable: "{{ controller_python | dirname }}/pip"
+  delegate_to: localhost
+  run_once: true
+  become: true
+
 - name: "[PREFLIGHT] Check if running on Proxmox host"
   ansible.builtin.stat:
     path: "/etc/pve/nodes"