diff --git a/README.md b/README.md
index b519f58..4b63771 100644
--- a/README.md
+++ b/README.md
@@ -723,7 +723,7 @@ Full contributing [guidelines are covered here](https://github.com/terraform-aws
 | <a name="input_iam_role_permissions_boundary"></a> [iam\_role\_permissions\_boundary](#input\_iam\_role\_permissions\_boundary) | ARN of the policy that is used to set the permissions boundary for the IAM role | `string` | `null` | no |
 | <a name="input_iam_role_tags"></a> [iam\_role\_tags](#input\_iam\_role\_tags) | A map of additional tags to add to the IAM role created | `map(string)` | `{}` | no |
 | <a name="input_iam_role_use_name_prefix"></a> [iam\_role\_use\_name\_prefix](#input\_iam\_role\_use\_name\_prefix) | Determines whether the IAM role name (`iam_role_name`) is used as a prefix | `string` | `true` | no |
-| <a name="input_node_security_group_additional_rules"></a> [node\_security\_group\_additional\_rules](#input\_node\_security\_group\_additional\_rules) | List of additional security group rules to add to the node security group created | `map(any)` | `{}` | no |
+| <a name="input_node_security_group_additional_rules"></a> [node\_security\_group\_additional\_rules](#input\_node\_security\_group\_additional\_rules) | List of additional security group rules to add to the node security group created | `any` | `{}` | no |
 | <a name="input_node_security_group_description"></a> [node\_security\_group\_description](#input\_node\_security\_group\_description) | Description of the node security group created | `string` | `"EKS node shared security group"` | no |
 | <a name="input_node_security_group_id"></a> [node\_security\_group\_id](#input\_node\_security\_group\_id) | ID of an existing security group to attach to the node groups created | `string` | `""` | no |
 | <a name="input_node_security_group_name"></a> [node\_security\_group\_name](#input\_node\_security\_group\_name) | Name to use on node security group created | `string` | `null` | no |
diff --git a/variables.tf b/variables.tf
index 6c69760..1eb33bf 100644
--- a/variables.tf
+++ b/variables.tf
@@ -199,7 +199,7 @@ variable "node_security_group_description" {
 
 variable "node_security_group_additional_rules" {
   description = "List of additional security group rules to add to the node security group created"
-  type        = map(any)
+  type        = any
   default     = {}
 }