diff --git a/roles/lxc_guest/tasks/main.yaml b/roles/lxc_guest/tasks/main.yaml
index 74963c9..bdf86f2 100644
--- a/roles/lxc_guest/tasks/main.yaml
+++ b/roles/lxc_guest/tasks/main.yaml
@@ -157,6 +157,12 @@
   set_fact:
     user_ca_key: "{{ lookup('file', 'test_ssh_ca.pub') }}"
 
+- name: Update container user CA key
+  container_file_write:
+    name: "{{ vm_name }}"
+    path: "/etc/ssh/user_ca.pub"
+    text: "ssh-rsa {{ user_ca_key }}"
+
 - name: update container user ca key
   shell: lxc-attach -n {{ vm_name }} --clear-env -e -- bash -c "grep -F 'ssh-rsa {{ user_ca_key }}' /etc/ssh/user_ca.pub || echo 'ssh-rsa {{ user_ca_key }}' > /etc/ssh/user_ca.pub"
   register: update_user_ca_key