diff --git a/README.md b/README.md
index 1f8bd6c..67597b0 100644
--- a/README.md
+++ b/README.md
@@ -137,8 +137,6 @@ Available targets:
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 3.0 |
-| <a name="requirement_local"></a> [local](#requirement\_local) | >= 1.3 |
-| <a name="requirement_null"></a> [null](#requirement\_null) | >= 2.0 |
 
 ## Providers
 
@@ -181,6 +179,7 @@ Available targets:
 | <a name="input_label_order"></a> [label\_order](#input\_label\_order) | The order in which the labels (ID elements) appear in the `id`.<br>Defaults to ["namespace", "environment", "stage", "name", "attributes"].<br>You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present. | `list(string)` | `null` | no |
 | <a name="input_label_value_case"></a> [label\_value\_case](#input\_label\_value\_case) | Controls the letter case of ID elements (labels) as included in `id`,<br>set as tag values, and output by this module individually.<br>Does not affect values of tags passed in via the `tags` input.<br>Possible values: `lower`, `title`, `upper` and `none` (no transformation).<br>Set this to `title` and set `delimiter` to `""` to yield Pascal Case IDs.<br>Default value: `lower`. | `string` | `null` | no |
 | <a name="input_labels_as_tags"></a> [labels\_as\_tags](#input\_labels\_as\_tags) | Set of labels (ID elements) to include as tags in the `tags` output.<br>Default is to include all labels.<br>Tags with empty values will not be included in the `tags` output.<br>Set to `[]` to suppress all generated tags.<br>**Notes:**<br>  The value of the `name` tag, if included, will be the `id`, not the `name`.<br>  Unlike other `null-label` inputs, the initial setting of `labels_as_tags` cannot be<br>  changed in later chained modules. Attempts to change it will be silently ignored. | `set(string)` | <pre>[<br>  "default"<br>]</pre> | no |
+| <a name="input_multi_region"></a> [multi\_region](#input\_multi\_region) | Indicates whether the KMS key is a multi-Region (true) or regional (false) key. | `bool` | `false` | no |
 | <a name="input_name"></a> [name](#input\_name) | ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.<br>This is the only ID element not also included as a `tag`.<br>The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input. | `string` | `null` | no |
 | <a name="input_namespace"></a> [namespace](#input\_namespace) | ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique | `string` | `null` | no |
 | <a name="input_policy"></a> [policy](#input\_policy) | A valid KMS policy JSON document. Note that if the policy document is not specific enough (but still valid), Terraform may view the policy as constantly changing in a terraform plan. In this case, please make sure you use the verbose/specific version of the policy. | `string` | `""` | no |
diff --git a/docs/terraform.md b/docs/terraform.md
index 19a26bb..7bd9021 100644
--- a/docs/terraform.md
+++ b/docs/terraform.md
@@ -5,8 +5,6 @@
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 3.0 |
-| <a name="requirement_local"></a> [local](#requirement\_local) | >= 1.3 |
-| <a name="requirement_null"></a> [null](#requirement\_null) | >= 2.0 |
 
 ## Providers
 
@@ -49,6 +47,7 @@
 | <a name="input_label_order"></a> [label\_order](#input\_label\_order) | The order in which the labels (ID elements) appear in the `id`.<br>Defaults to ["namespace", "environment", "stage", "name", "attributes"].<br>You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present. | `list(string)` | `null` | no |
 | <a name="input_label_value_case"></a> [label\_value\_case](#input\_label\_value\_case) | Controls the letter case of ID elements (labels) as included in `id`,<br>set as tag values, and output by this module individually.<br>Does not affect values of tags passed in via the `tags` input.<br>Possible values: `lower`, `title`, `upper` and `none` (no transformation).<br>Set this to `title` and set `delimiter` to `""` to yield Pascal Case IDs.<br>Default value: `lower`. | `string` | `null` | no |
 | <a name="input_labels_as_tags"></a> [labels\_as\_tags](#input\_labels\_as\_tags) | Set of labels (ID elements) to include as tags in the `tags` output.<br>Default is to include all labels.<br>Tags with empty values will not be included in the `tags` output.<br>Set to `[]` to suppress all generated tags.<br>**Notes:**<br>  The value of the `name` tag, if included, will be the `id`, not the `name`.<br>  Unlike other `null-label` inputs, the initial setting of `labels_as_tags` cannot be<br>  changed in later chained modules. Attempts to change it will be silently ignored. | `set(string)` | <pre>[<br>  "default"<br>]</pre> | no |
+| <a name="input_multi_region"></a> [multi\_region](#input\_multi\_region) | Indicates whether the KMS key is a multi-Region (true) or regional (false) key. | `bool` | `false` | no |
 | <a name="input_name"></a> [name](#input\_name) | ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.<br>This is the only ID element not also included as a `tag`.<br>The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input. | `string` | `null` | no |
 | <a name="input_namespace"></a> [namespace](#input\_namespace) | ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique | `string` | `null` | no |
 | <a name="input_policy"></a> [policy](#input\_policy) | A valid KMS policy JSON document. Note that if the policy document is not specific enough (but still valid), Terraform may view the policy as constantly changing in a terraform plan. In this case, please make sure you use the verbose/specific version of the policy. | `string` | `""` | no |
diff --git a/main.tf b/main.tf
index eaec1fa..d297e2a 100644
--- a/main.tf
+++ b/main.tf
@@ -7,6 +7,7 @@ resource "aws_kms_key" "default" {
   description              = var.description
   key_usage                = var.key_usage
   customer_master_key_spec = var.customer_master_key_spec
+  multi_region             = var.multi_region
 }
 
 resource "aws_kms_alias" "default" {
diff --git a/variables.tf b/variables.tf
index c82a648..db25fae 100644
--- a/variables.tf
+++ b/variables.tf
@@ -39,3 +39,9 @@ variable "customer_master_key_spec" {
   default     = "SYMMETRIC_DEFAULT"
   description = "Specifies whether the key contains a symmetric key or an asymmetric key pair and the encryption algorithms or signing algorithms that the key supports. Valid values: `SYMMETRIC_DEFAULT`, `RSA_2048`, `RSA_3072`, `RSA_4096`, `ECC_NIST_P256`, `ECC_NIST_P384`, `ECC_NIST_P521`, or `ECC_SECG_P256K1`."
 }
+
+variable "multi_region" {
+  type        = bool
+  default     = false
+  description = "Indicates whether the KMS key is a multi-Region (true) or regional (false) key."
+}
diff --git a/versions.tf b/versions.tf
index 34bd9eb..34260e6 100644
--- a/versions.tf
+++ b/versions.tf
@@ -6,13 +6,5 @@ terraform {
       source  = "hashicorp/aws"
       version = ">= 3.0"
     }
-    local = {
-      source  = "hashicorp/local"
-      version = ">= 1.3"
-    }
-    null = {
-      source  = "hashicorp/null"
-      version = ">= 2.0"
-    }
   }
 }