diff --git a/README.md b/README.md
index 2567ef5..93d8389 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ No modules.
 | <a name="input_s3_bucket"></a> [s3\_bucket](#input\_s3\_bucket) | The S3 bucket location containing the function's deployment package | `string` | `null` | no |
 | <a name="input_s3_key"></a> [s3\_key](#input\_s3\_key) | The S3 key of an object containing the function's deployment package | `string` | `null` | no |
 | <a name="input_s3_object_version"></a> [s3\_object\_version](#input\_s3\_object\_version) | The object version containing the function's deployment package | `string` | `null` | no |
-| <a name="input_security_group_egress_rules"></a> [security\_group\_egress\_rules](#input\_security\_group\_egress\_rules) | Security Group egress rules | <pre>list(object({<br>    cidr_ipv4   = string<br>    description = string<br>    from_port   = optional(number, 0)<br>    ip_protocol = optional(string, "-1")<br>    to_port     = optional(number, 0)<br>  }))</pre> | `[]` | no |
+| <a name="input_security_group_egress_rules"></a> [security\_group\_egress\_rules](#input\_security\_group\_egress\_rules) | Security Group egress rules | <pre>list(object({<br>    cidr_ipv4                    = optional(string)<br>    cidr_ipv6                    = optional(string)<br>    description                  = string<br>    from_port                    = optional(number, 0)<br>    ip_protocol                  = optional(string, "-1")<br>    prefix_list_id               = optional(string)<br>    referenced_security_group_id = optional(string)<br>    to_port                      = optional(number, 0)<br>  }))</pre> | `[]` | no |
 | <a name="input_source_code_hash"></a> [source\_code\_hash](#input\_source\_code\_hash) | Optional source code hash | `string` | `null` | no |
 | <a name="input_subnet_ids"></a> [subnet\_ids](#input\_subnet\_ids) | The subnet ids where this lambda needs to run | `list(string)` | `null` | no |
 | <a name="input_tags"></a> [tags](#input\_tags) | A mapping of tags to assign to the bucket | `map(string)` | `{}` | no |