diff --git a/vpn-transit-gateway/README.md b/vpn-transit-gateway/README.md
index 1b1053b..25b1596 100644
--- a/vpn-transit-gateway/README.md
+++ b/vpn-transit-gateway/README.md
@@ -24,14 +24,15 @@ To download the configuration, follow these directions [page 24 from AWS docs](h
 module "vpn_transit-gateway" {
   source          = "git@github.e.it.census.gov:terraform-modules/aws-vpc-setup.git//vpn-transit-gateway"
   create          = true
-  transit_gateway_id = "tgw-12345678"
   vpc_id          = "vpc-1234568"
-  vpc_full_name   = "vpc2-dice-dev"
+  transit_gateway_id = "tgw-12345678"
   tgw_environment = "dev"
   vpn_settings = [
     { site = "hq",   environment = "dev", sequence = 1, "bgp_asn_id" = 65510, "ip_address" = "148.129.160.100" },
     { site = "bcc",  environment = "dev", sequence = 1, "bgp_asn_id" = 65511, "ip_address" = "148.129.90.100" },
   ]
+  tgw_route_table_association = "tgw-rtb-123123123123"
+  tgw_route_table_propagation = [ "tgw-rtb-123123123123", "tgw-rtb-234234234234" ]
   tags            = {}
 
  # optional
diff --git a/vpn-transit-gateway/main.tf b/vpn-transit-gateway/main.tf
index ad08541..8e98e9a 100644
--- a/vpn-transit-gateway/main.tf
+++ b/vpn-transit-gateway/main.tf
@@ -25,14 +25,15 @@
 * module "vpn_transit-gateway" {
 *   source          = "git@github.e.it.census.gov:terraform-modules/aws-vpc-setup.git//vpn-transit-gateway"
 *   create          = true
-*   transit_gateway_id = "tgw-12345678"
 *   vpc_id          = "vpc-1234568"
-*   vpc_full_name   = "vpc2-dice-dev"
+*   transit_gateway_id = "tgw-12345678"
 *   tgw_environment = "dev"
 *   vpn_settings = [ 
 *     { site = "hq",   environment = "dev", sequence = 1, "bgp_asn_id" = 65510, "ip_address" = "148.129.160.100" },
 *     { site = "bcc",  environment = "dev", sequence = 1, "bgp_asn_id" = 65511, "ip_address" = "148.129.90.100" },
 *   ]
+*   tgw_route_table_association = "tgw-rtb-123123123123"
+*   tgw_route_table_propagation = [ "tgw-rtb-123123123123", "tgw-rtb-234234234234" ]
 *   tags            = {}
 *
 *  # optional