diff --git a/.github/workflows/release-branch.yml b/.github/workflows/release-branch.yml
index 3f8fe62..b30901e 100644
--- a/.github/workflows/release-branch.yml
+++ b/.github/workflows/release-branch.yml
@@ -10,6 +10,7 @@ on:
       - 'docs/**'
       - 'examples/**'
       - 'test/**'
+      - 'README.*'
 
 permissions:
   contents: write
diff --git a/.github/workflows/release-published.yml b/.github/workflows/release-published.yml
index f86352b..b31232b 100644
--- a/.github/workflows/release-published.yml
+++ b/.github/workflows/release-published.yml
@@ -11,4 +11,4 @@ permissions:
 
 jobs:
   terraform-module:
-    uses: cloudposse/github-actions-workflows-terraform-module/.github/workflows/release.yml@main
+    uses: cloudposse/github-actions-workflows-terraform-module/.github/workflows/release-published.yml@main
diff --git a/README.md b/README.md
index 20994d4..1f699e4 100644
--- a/README.md
+++ b/README.md
@@ -424,7 +424,7 @@ Available targets:
 
 | Name | Version |
 |------|---------|
-| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13.0 |
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 2.0 |
 | <a name="requirement_random"></a> [random](#requirement\_random) | >= 2.0 |
 
diff --git a/docs/terraform.md b/docs/terraform.md
index 3e686fe..a076d57 100644
--- a/docs/terraform.md
+++ b/docs/terraform.md
@@ -3,7 +3,7 @@
 
 | Name | Version |
 |------|---------|
-| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13.0 |
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 2.0 |
 | <a name="requirement_random"></a> [random](#requirement\_random) | >= 2.0 |
 
diff --git a/examples/complete/main.tf b/examples/complete/main.tf
index 7ac5d61..8a6570b 100644
--- a/examples/complete/main.tf
+++ b/examples/complete/main.tf
@@ -3,21 +3,23 @@ provider "aws" {
 }
 
 module "vpc" {
-  source     = "cloudposse/vpc/aws"
-  version    = "0.18.1"
-  cidr_block = var.vpc_cidr_block
+  source  = "cloudposse/vpc/aws"
+  version = "2.1.0"
+
+  ipv4_primary_cidr_block = var.vpc_cidr_block
 
   context = module.this.context
 }
 
 module "subnets" {
-  source               = "cloudposse/dynamic-subnets/aws"
-  version              = "0.33.0"
+  source  = "cloudposse/dynamic-subnets/aws"
+  version = "2.3.0"
+
   availability_zones   = var.availability_zones
   vpc_id               = module.vpc.vpc_id
-  igw_id               = module.vpc.igw_id
-  cidr_block           = module.vpc.vpc_cidr_block
-  nat_gateway_enabled  = true
+  igw_id               = [module.vpc.igw_id]
+  ipv4_cidr_block      = [module.vpc.vpc_cidr_block]
+  nat_gateway_enabled  = false
   nat_instance_enabled = false
 
   context = module.this.context
diff --git a/examples/complete/versions.tf b/examples/complete/versions.tf
index 5947f14..7f2777f 100644
--- a/examples/complete/versions.tf
+++ b/examples/complete/versions.tf
@@ -1,5 +1,5 @@
 terraform {
-  required_version = ">= 0.12.26"
+  required_version = ">= 1.0"
 
   required_providers {
     aws = {
diff --git a/examples/with_cognito_authentication/versions.tf b/examples/with_cognito_authentication/versions.tf
index 5947f14..7f2777f 100644
--- a/examples/with_cognito_authentication/versions.tf
+++ b/examples/with_cognito_authentication/versions.tf
@@ -1,5 +1,5 @@
 terraform {
-  required_version = ">= 0.12.26"
+  required_version = ">= 1.0"
 
   required_providers {
     aws = {
diff --git a/examples/with_google_oidc_authentication/versions.tf b/examples/with_google_oidc_authentication/versions.tf
index 5947f14..7f2777f 100644
--- a/examples/with_google_oidc_authentication/versions.tf
+++ b/examples/with_google_oidc_authentication/versions.tf
@@ -1,5 +1,5 @@
 terraform {
-  required_version = ">= 0.12.26"
+  required_version = ">= 1.0"
 
   required_providers {
     aws = {
diff --git a/examples/without_authentication/versions.tf b/examples/without_authentication/versions.tf
index 5947f14..7f2777f 100644
--- a/examples/without_authentication/versions.tf
+++ b/examples/without_authentication/versions.tf
@@ -1,5 +1,5 @@
 terraform {
-  required_version = ">= 0.12.26"
+  required_version = ">= 1.0"
 
   required_providers {
     aws = {
diff --git a/main.tf b/main.tf
index 0954ea6..bad48ac 100644
--- a/main.tf
+++ b/main.tf
@@ -22,17 +22,17 @@ locals {
   hostname                   = var.hostname != "" ? var.hostname : local.default_hostname
   atlantis_webhook_url       = format(var.atlantis_webhook_format, local.hostname)
   atlantis_url               = format(var.atlantis_url_format, local.hostname)
-  atlantis_gh_webhook_secret = var.atlantis_gh_webhook_secret != "" ? var.atlantis_gh_webhook_secret : join("", random_string.atlantis_gh_webhook_secret.*.result)
-  default_hostname           = join("", aws_route53_record.default.*.fqdn)
+  atlantis_gh_webhook_secret = var.atlantis_gh_webhook_secret != "" ? var.atlantis_gh_webhook_secret : join("", random_string.atlantis_gh_webhook_secret[*].result)
+  default_hostname           = join("", aws_route53_record.default[*].fqdn)
   kms_key_id                 = var.kms_key_id != "" ? var.kms_key_id : format("alias/%s-%s-chamber", module.this.namespace, module.this.stage)
 }
 
 # GitHub tokens
 locals {
-  github_oauth_token          = var.github_oauth_token != "" ? var.github_oauth_token : join("", data.aws_ssm_parameter.atlantis_gh_token.*.value)
+  github_oauth_token          = var.github_oauth_token != "" ? var.github_oauth_token : join("", data.aws_ssm_parameter.atlantis_gh_token[*].value)
   github_oauth_token_ssm_name = var.github_oauth_token_ssm_name != "" ? var.github_oauth_token_ssm_name : format(var.chamber_format, var.chamber_service, "atlantis_gh_token")
 
-  github_webhooks_token          = var.github_webhooks_token != "" ? var.github_webhooks_token : join("", data.aws_ssm_parameter.github_webhooks_token.*.value)
+  github_webhooks_token          = var.github_webhooks_token != "" ? var.github_webhooks_token : join("", data.aws_ssm_parameter.github_webhooks_token[*].value)
   github_webhooks_token_ssm_name = var.github_webhooks_token_ssm_name != "" ? var.github_webhooks_token_ssm_name : format(var.chamber_format, var.chamber_service, "github_webhooks_token")
 }
 
@@ -239,7 +239,7 @@ resource "aws_ssm_parameter" "atlantis_gh_team_whitelist" {
 resource "aws_ssm_parameter" "atlantis_gh_webhook_secret" {
   count       = local.enabled ? 1 : 0
   description = "Atlantis GitHub webhook secret"
-  key_id      = join("", data.aws_kms_key.chamber_kms_key.*.id)
+  key_id      = join("", data.aws_kms_key.chamber_kms_key[*].id)
   name        = format(var.chamber_format, var.chamber_service, "atlantis_gh_webhook_secret")
   overwrite   = var.overwrite_ssm_parameter
   type        = "SecureString"
@@ -300,7 +300,7 @@ resource "aws_ssm_parameter" "atlantis_wake_word" {
 resource "aws_ssm_parameter" "atlantis_gh_token" {
   count       = local.enabled && var.github_oauth_token != "" ? 1 : 0
   description = "Atlantis GitHub OAuth token"
-  key_id      = join("", data.aws_kms_key.chamber_kms_key.*.id)
+  key_id      = join("", data.aws_kms_key.chamber_kms_key[*].id)
   name        = local.github_oauth_token_ssm_name
   overwrite   = var.overwrite_ssm_parameter
   type        = "SecureString"
@@ -311,7 +311,7 @@ resource "aws_ssm_parameter" "atlantis_gh_token" {
 resource "aws_ssm_parameter" "github_webhooks_token" {
   count       = local.enabled && var.github_webhooks_token != "" ? 1 : 0
   description = "GitHub OAuth token with permission to create webhooks"
-  key_id      = join("", data.aws_kms_key.chamber_kms_key.*.id)
+  key_id      = join("", data.aws_kms_key.chamber_kms_key[*].id)
   name        = local.github_webhooks_token_ssm_name
   overwrite   = var.overwrite_ssm_parameter
   type        = "SecureString"
@@ -370,7 +370,7 @@ resource "aws_iam_role_policy_attachment" "default" {
 }
 
 locals {
-  authentication_cognito_user_pool_arn = var.authentication_cognito_user_pool_arn != "" ? var.authentication_cognito_user_pool_arn : join("", data.aws_ssm_parameter.atlantis_cognito_user_pool_arn.*.value)
+  authentication_cognito_user_pool_arn = var.authentication_cognito_user_pool_arn != "" ? var.authentication_cognito_user_pool_arn : join("", data.aws_ssm_parameter.atlantis_cognito_user_pool_arn[*].value)
 
   authentication_cognito_user_pool_arn_ssm_name = var.authentication_cognito_user_pool_arn_ssm_name != "" ? var.authentication_cognito_user_pool_arn_ssm_name : format(
     var.chamber_format,
@@ -378,7 +378,7 @@ locals {
     "atlantis_cognito_user_pool_arn"
   )
 
-  authentication_cognito_user_pool_client_id = var.authentication_cognito_user_pool_client_id != "" ? var.authentication_cognito_user_pool_client_id : join("", data.aws_ssm_parameter.atlantis_cognito_user_pool_client_id.*.value)
+  authentication_cognito_user_pool_client_id = var.authentication_cognito_user_pool_client_id != "" ? var.authentication_cognito_user_pool_client_id : join("", data.aws_ssm_parameter.atlantis_cognito_user_pool_client_id[*].value)
 
   authentication_cognito_user_pool_client_id_ssm_name = var.authentication_cognito_user_pool_client_id_ssm_name != "" ? var.authentication_cognito_user_pool_client_id_ssm_name : format(
     var.chamber_format,
@@ -386,7 +386,7 @@ locals {
     "atlantis_cognito_user_pool_client_id"
   )
 
-  authentication_cognito_user_pool_domain = var.authentication_cognito_user_pool_domain != "" ? var.authentication_cognito_user_pool_domain : join("", data.aws_ssm_parameter.atlantis_cognito_user_pool_domain.*.value)
+  authentication_cognito_user_pool_domain = var.authentication_cognito_user_pool_domain != "" ? var.authentication_cognito_user_pool_domain : join("", data.aws_ssm_parameter.atlantis_cognito_user_pool_domain[*].value)
 
   authentication_cognito_user_pool_domain_ssm_name = var.authentication_cognito_user_pool_domain_ssm_name != "" ? var.authentication_cognito_user_pool_domain_ssm_name : format(
     var.chamber_format,
@@ -394,7 +394,7 @@ locals {
     "atlantis_cognito_user_pool_domain"
   )
 
-  authentication_oidc_client_id = var.authentication_oidc_client_id != "" ? var.authentication_oidc_client_id : join("", data.aws_ssm_parameter.atlantis_oidc_client_id.*.value)
+  authentication_oidc_client_id = var.authentication_oidc_client_id != "" ? var.authentication_oidc_client_id : join("", data.aws_ssm_parameter.atlantis_oidc_client_id[*].value)
 
   authentication_oidc_client_id_ssm_name = var.authentication_oidc_client_id_ssm_name != "" ? var.authentication_oidc_client_id_ssm_name : format(
     var.chamber_format,
@@ -402,7 +402,7 @@ locals {
     "atlantis_oidc_client_id"
   )
 
-  authentication_oidc_client_secret = var.authentication_oidc_client_secret != "" ? var.authentication_oidc_client_secret : join("", data.aws_ssm_parameter.atlantis_oidc_client_secret.*.value)
+  authentication_oidc_client_secret = var.authentication_oidc_client_secret != "" ? var.authentication_oidc_client_secret : join("", data.aws_ssm_parameter.atlantis_oidc_client_secret[*].value)
 
   authentication_oidc_client_secret_ssm_name = var.authentication_oidc_client_secret_ssm_name != "" ? var.authentication_oidc_client_secret_ssm_name : format(
     var.chamber_format,
diff --git a/versions.tf b/versions.tf
index 739a73c..bae2b4b 100644
--- a/versions.tf
+++ b/versions.tf
@@ -1,5 +1,5 @@
 terraform {
-  required_version = ">= 0.13.0"
+  required_version = ">= 1.0"
 
   required_providers {
     aws = {