diff --git a/examples/cloud_wan/README.md b/examples/cloud_wan/README.md
index 8dc62c1..8f1edde 100644
--- a/examples/cloud_wan/README.md
+++ b/examples/cloud_wan/README.md
@@ -16,28 +16,27 @@ This example shows how you can use this module with `core_network` subnets, and
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.3.0 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 4.27.0 |
-| <a name="requirement_awscc"></a> [awscc](#requirement\_awscc) | >= 0.36.0 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
 | <a name="provider_aws"></a> [aws](#provider\_aws) | >= 4.27.0 |
-| <a name="provider_awscc.awsccnvirginia"></a> [awscc.awsccnvirginia](#provider\_awscc.awsccnvirginia) | >= 0.36.0 |
+| <a name="provider_aws.awsnvirginia"></a> [aws.awsnvirginia](#provider\_aws.awsnvirginia) | >= 4.27.0 |
 
 ## Modules
 
 | Name | Source | Version |
 |------|--------|---------|
-| <a name="module_ireland_vpc"></a> [ireland\_vpc](#module\_ireland\_vpc) | aws-ia/vpc/aws | >= 3.0.2 |
-| <a name="module_nvirginia_vpc"></a> [nvirginia\_vpc](#module\_nvirginia\_vpc) | aws-ia/vpc/aws | >= 3.0.2 |
+| <a name="module_ireland_vpc"></a> [ireland\_vpc](#module\_ireland\_vpc) | aws-ia/vpc/aws | >= 4.0.0 |
+| <a name="module_nvirginia_vpc"></a> [nvirginia\_vpc](#module\_nvirginia\_vpc) | aws-ia/vpc/aws | >= 4.0.0 |
 
 ## Resources
 
 | Name | Type |
 |------|------|
-| [awscc_networkmanager_core_network.core_network](https://registry.terraform.io/providers/hashicorp/awscc/latest/docs/resources/networkmanager_core_network) | resource |
-| [awscc_networkmanager_global_network.global_network](https://registry.terraform.io/providers/hashicorp/awscc/latest/docs/resources/networkmanager_global_network) | resource |
+| [aws_networkmanager_core_network.core_network](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/networkmanager_core_network) | resource |
+| [aws_networkmanager_global_network.global_network](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/networkmanager_global_network) | resource |
 | [aws_networkmanager_core_network_policy_document.policy](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/networkmanager_core_network_policy_document) | data source |
 
 ## Inputs
diff --git a/examples/public_private_flow_logs/README.md b/examples/public_private_flow_logs/README.md
index ee77944..1066fef 100644
--- a/examples/public_private_flow_logs/README.md
+++ b/examples/public_private_flow_logs/README.md
@@ -22,7 +22,7 @@ At this point, only cloud-watch logs are support, pending: https://github.com/aw
 
 | Name | Source | Version |
 |------|--------|---------|
-| <a name="module_vpc"></a> [vpc](#module\_vpc) | aws-ia/vpc/aws | >= 3.0.2 |
+| <a name="module_vpc"></a> [vpc](#module\_vpc) | ../.. | n/a |
 
 ## Resources
 
diff --git a/examples/transit_gateway/.header.md b/examples/transit_gateway/.header.md
new file mode 100644
index 0000000..14a9c0b
--- /dev/null
+++ b/examples/transit_gateway/.header.md
@@ -0,0 +1,9 @@
+# Creating AWS Transit Gateway VPC attachment
+
+This example shows how you can use this module with `transit_gateway` subnets, and AWS Transit Gateway VPC attachment. This examples creates the following:
+
+* AWS Transit Gateway.
+* The VPC module creates the following:
+  * Four sets of subnets (*public*, *private_with_egress*, *truly_private*, and *transit_gateway*)
+  * Transit Gateway VPC attachment.
+  * Routing to Transit Gateway attachment from *public* and *private_with_egress* subnets.
\ No newline at end of file
diff --git a/examples/transit_gateway/.terraform-docs.yaml b/examples/transit_gateway/.terraform-docs.yaml
new file mode 100644
index 0000000..6dc99de
--- /dev/null
+++ b/examples/transit_gateway/.terraform-docs.yaml
@@ -0,0 +1,21 @@
+formatter: markdown
+header-from: .header.md
+settings:
+  anchor: true
+  color: true
+  default: true
+  escape: true
+  html: true
+  indent: 2
+  required: true
+  sensitive: true
+  type: true
+  lockfile: false
+
+sort:
+  enabled: true
+  by: required
+
+output:
+  file: README.md
+  mode: replace
diff --git a/examples/transit_gateway/README.md b/examples/transit_gateway/README.md
new file mode 100644
index 0000000..dcb706a
--- /dev/null
+++ b/examples/transit_gateway/README.md
@@ -0,0 +1,45 @@
+<!-- BEGIN_TF_DOCS -->
+# Creating AWS Transit Gateway VPC attachment
+
+This example shows how you can use this module with `transit_gateway` subnets, and AWS Transit Gateway VPC attachment. This examples creates the following:
+
+* AWS Transit Gateway.
+* The VPC module creates the following:
+  * Four sets of subnets (*public*, *private\_with\_egress*, *truly\_private*, and *transit\_gateway*)
+  * Transit Gateway VPC attachment.
+  * Routing to Transit Gateway attachment from *public* and *private\_with\_egress* subnets.
+
+## Requirements
+
+No requirements.
+
+## Providers
+
+| Name | Version |
+|------|---------|
+| <a name="provider_aws"></a> [aws](#provider\_aws) | n/a |
+
+## Modules
+
+| Name | Source | Version |
+|------|--------|---------|
+| <a name="module_tgw_base_for_example_only"></a> [tgw\_base\_for\_example\_only](#module\_tgw\_base\_for\_example\_only) | ../../test/hcl_fixtures/transit_gateway_base | n/a |
+| <a name="module_vpc"></a> [vpc](#module\_vpc) | aws-ia/vpc/aws | >= 4.0.0 |
+
+## Resources
+
+| Name | Type |
+|------|------|
+| [aws_availability_zones.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/availability_zones) | data source |
+
+## Inputs
+
+No inputs.
+
+## Outputs
+
+| Name | Description |
+|------|-------------|
+| <a name="output_private_subnets_tags_length"></a> [private\_subnets\_tags\_length](#output\_private\_subnets\_tags\_length) | Count of private subnet tags for a single az. |
+| <a name="output_tgw_subnets_tags_length"></a> [tgw\_subnets\_tags\_length](#output\_tgw\_subnets\_tags\_length) | Count of tgw subnet tags for a single az. |
+<!-- END_TF_DOCS -->
\ No newline at end of file
diff --git a/examples/transit_gateway/main.tf b/examples/transit_gateway/main.tf
index 0efb2ec..e2fed68 100644
--- a/examples/transit_gateway/main.tf
+++ b/examples/transit_gateway/main.tf
@@ -1,9 +1,8 @@
 data "aws_availability_zones" "current" {}
 
 module "vpc" {
-  # source  = "aws-ia/vpc/aws"
-  # version = ">= 3.0.2"
-  source = "../.."
+  source  = "aws-ia/vpc/aws"
+  version = ">= 4.0.0"
 
   name               = "tgw"
   cidr_block         = "10.0.0.0/16"