diff --git a/3-networks-hub-and-spoke/modules/transitivity/main.tf b/3-networks-hub-and-spoke/modules/transitivity/main.tf
index bc659e5e5..92cafdf2f 100644
--- a/3-networks-hub-and-spoke/modules/transitivity/main.tf
+++ b/3-networks-hub-and-spoke/modules/transitivity/main.tf
@@ -75,15 +75,16 @@ module "migs" {
   instance_template = module.templates[each.key].self_link
   update_policy = [
     {
-      max_surge_fixed              = 4
-      max_surge_percent            = null
-      instance_redistribution_type = "NONE"
-      max_unavailable_fixed        = 4
-      max_unavailable_percent      = null
-      min_ready_sec                = 180
-      minimal_action               = "RESTART"
-      type                         = "OPPORTUNISTIC"
-      replacement_method           = "SUBSTITUTE"
+      max_surge_fixed                = 4
+      max_surge_percent              = null
+      instance_redistribution_type   = "NONE"
+      max_unavailable_fixed          = 4
+      max_unavailable_percent        = null
+      min_ready_sec                  = 180
+      minimal_action                 = "RESTART"
+      type                           = "OPPORTUNISTIC"
+      replacement_method             = "SUBSTITUTE"
+      most_disruptive_allowed_action = "REPLACE"
     }
   ]
 }