diff --git a/README.md b/README.md
index e9d23b4..03e03fa 100644
--- a/README.md
+++ b/README.md
@@ -102,7 +102,7 @@ Available targets:
 | Name | Version |
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.3 |
-| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 5.21.0 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 5.29.0 |
 | <a name="requirement_local"></a> [local](#requirement\_local) | >= 1.3 |
 | <a name="requirement_random"></a> [random](#requirement\_random) | >= 1.0 |
 
@@ -110,7 +110,7 @@ Available targets:
 
 | Name | Version |
 |------|---------|
-| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 5.21.0 |
+| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 5.29.0 |
 | <a name="provider_random"></a> [random](#provider\_random) | >= 1.0 |
 
 ## Modules
diff --git a/docs/terraform.md b/docs/terraform.md
index a2e6e99..a1e3edd 100644
--- a/docs/terraform.md
+++ b/docs/terraform.md
@@ -4,7 +4,7 @@
 | Name | Version |
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.3 |
-| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 5.21.0 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 5.29.0 |
 | <a name="requirement_local"></a> [local](#requirement\_local) | >= 1.3 |
 | <a name="requirement_random"></a> [random](#requirement\_random) | >= 1.0 |
 
@@ -12,7 +12,7 @@
 
 | Name | Version |
 |------|---------|
-| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 5.21.0 |
+| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 5.29.0 |
 | <a name="provider_random"></a> [random](#provider\_random) | >= 1.0 |
 
 ## Modules
diff --git a/examples/complete/fixtures.us-east-2.tfvars b/examples/complete/fixtures.us-east-2.tfvars
index 2c8d442..ca03dee 100644
--- a/examples/complete/fixtures.us-east-2.tfvars
+++ b/examples/complete/fixtures.us-east-2.tfvars
@@ -31,6 +31,8 @@ engine = "docdb"
 
 storage_encrypted = true
 
+storage_type = "standard"
+
 skip_final_snapshot = true
 
 apply_immediately = true
diff --git a/examples/complete/main.tf b/examples/complete/main.tf
index 3d710d2..0a85d20 100644
--- a/examples/complete/main.tf
+++ b/examples/complete/main.tf
@@ -60,6 +60,7 @@ module "documentdb_cluster" {
   engine                          = var.engine
   engine_version                  = var.engine_version
   storage_encrypted               = var.storage_encrypted
+  storage_type                    = var.storage_type
   kms_key_id                      = var.kms_key_id
   skip_final_snapshot             = var.skip_final_snapshot
   enabled_cloudwatch_logs_exports = var.enabled_cloudwatch_logs_exports
diff --git a/examples/complete/variables.tf b/examples/complete/variables.tf
index b9902ca..fb4e1a1 100644
--- a/examples/complete/variables.tf
+++ b/examples/complete/variables.tf
@@ -119,6 +119,17 @@ variable "storage_encrypted" {
   default     = true
 }
 
+variable "storage_type" {
+  type        = string
+  description = "The storage type to associate with the DB cluster. Valid values: standard, iopt1"
+  default     = "standard"
+
+  validation {
+    condition     = contains(["standard", "iopt1"], var.storage_type)
+    error_message = "Error: storage_type value must be one of two options - 'standard' or 'iopt1'."
+  }
+}
+
 variable "kms_key_id" {
   type        = string
   description = "The ARN for the KMS encryption key. When specifying `kms_key_id`, `storage_encrypted` needs to be set to `true`"
diff --git a/versions.tf b/versions.tf
index 04c7896..cb86f2c 100644
--- a/versions.tf
+++ b/versions.tf
@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = ">= 5.21.0"
+      version = ">= 5.29.0"
     }
     local = {
       source  = "hashicorp/local"