diff --git a/roles/pfsense_upgrade/tasks/upgrade.yml b/roles/pfsense_upgrade/tasks/upgrade.yml
index 1b71be8..45a76dc 100644
--- a/roles/pfsense_upgrade/tasks/upgrade.yml
+++ b/roles/pfsense_upgrade/tasks/upgrade.yml
@@ -26,7 +26,7 @@
 # ---------------------------------------------------------------------------
 - name: Create backup of current config.xml
   ansible.builtin.raw:
-    cmd: cp /conf/config.xml /conf/config.xml.pre_upgrade_{{ ansible_date_time.epoch }}
+    cmd: cp /conf/config.xml /conf/config.xml.pre_upgrade_$(date +%s)
   become: yes
   register: _config_backup
   when: perform_upgrade | bool