diff --git a/vpn-transit-gateway/README.md b/vpn-transit-gateway/README.md
index e165506..c2a69a4 100644
--- a/vpn-transit-gateway/README.md
+++ b/vpn-transit-gateway/README.md
@@ -108,7 +108,7 @@ No modules.
 | <a name="input_tgw_environment"></a> [tgw\_environment](#input\_tgw\_environment) | Transit Gatewway environment purpose (services, dev, test, stage, prod, cre) | `string` | `null` | no |
 | <a name="input_tgw_route_table_association"></a> [tgw\_route\_table\_association](#input\_tgw\_route\_table\_association) | Transit Gateway Route Table to associate the VPN attachments with.  Only one route table may be associated with a VPN attachment. | `string` | `null` | no |
 | <a name="input_tgw_route_table_propagation"></a> [tgw\_route\_table\_propagation](#input\_tgw\_route\_table\_propagation) | Transit Gateway Route Tables to propagate the VPN attachments.  Multiple route tables may be selected. | `list(string)` | `[]` | no |
-| <a name="input_tgw_vpn_settings"></a> [tgw\_vpn\_settings](#input\_tgw\_vpn\_settings) | Transit Gateway VPN Connection details array of objects | <pre>list(object(<br>    {<br>      site              = string<br>      environment       = string<br>      sequence          = number<br>      region            = optional(string)<br>      bgp_asn_id        = number<br>      ip_address        = string<br>      tunnel_ips        = list(string)<br>      preshared_keys    = list(string)<br>      tunnel_interfaces = optional(list(number))<br>      tunnel_loopback   = optional(number)<br>    }<br>  ))</pre> | `[]` | no |
+| <a name="input_tgw_vpn_settings"></a> [tgw\_vpn\_settings](#input\_tgw\_vpn\_settings) | Transit Gateway VPN Connection details array of objects | <pre>list(object(<br>    {<br>      site              = string<br>      environment       = string<br>      sequence          = number<br>      region            = optional(string)<br>      bgp_asn_id        = number<br>      ip_address        = string<br>      tunnel_ips        = list(string)<br>      preshared_keys    = list(string)<br>      tunnel_interfaces = optional(list(number))<br>      tunnel_track      = optional(list(number))<br>      tunnel_loopback   = optional(number)<br>    }<br>  ))</pre> | `[]` | no |
 | <a name="input_transit_gateway_id"></a> [transit\_gateway\_id](#input\_transit\_gateway\_id) | Transit Gateway ID | `string` | n/a | yes |
 | <a name="input_use_single_cgw"></a> [use\_single\_cgw](#input\_use\_single\_cgw) | Flag to enable or disable the use of a single customer gateway per site vs one per site and VPN | `bool` | `false` | no |
 | <a name="input_use_tgw_prefixes"></a> [use\_tgw\_prefixes](#input\_use\_tgw\_prefixes) | Flag to enable or disable the use of Transit Gateway prefixes (default: false) | `bool` | `false` | no |
diff --git a/vpn-transit-gateway/variables.tf b/vpn-transit-gateway/variables.tf
index 2d566fb..9445bb3 100644
--- a/vpn-transit-gateway/variables.tf
+++ b/vpn-transit-gateway/variables.tf
@@ -26,6 +26,7 @@ variable "tgw_vpn_settings" {
       tunnel_ips        = list(string)
       preshared_keys    = list(string)
       tunnel_interfaces = optional(list(number))
+      tunnel_track      = optional(list(number))
       tunnel_loopback   = optional(number)
     }
   ))