diff --git a/iptables/map.jinja b/iptables/map.jinja
index 8ad45f6..1da1b62 100644
--- a/iptables/map.jinja
+++ b/iptables/map.jinja
@@ -1,5 +1,6 @@
 {% set schema = salt['grains.filter_by']({
     'default': {
+        'epoch': 1,
     },
 }, grain='os_family', merge=salt['pillar.get']('iptables:schema')) %}