diff --git a/README.md b/README.md
index 30e1959..9fd7e49 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,6 @@ Deploys an etcd cluster in AWS on Flatcar Linux. Outputs node information and AL
 | Name | Version |
 |------|---------|
 | <a name="provider_aws"></a> [aws](#provider\_aws) | >= 4.0.0 |
-| <a name="provider_ct"></a> [ct](#provider\_ct) | 0.10.0 |
 | <a name="provider_random"></a> [random](#provider\_random) | n/a |
 | <a name="provider_tls"></a> [tls](#provider\_tls) | n/a |
 
@@ -41,21 +40,22 @@ No modules.
 | [random_id.index](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/id) | resource |
 | [random_string.random_prefix](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/string) | resource |
 | [tls_private_key.ssh_key_etcd](https://registry.terraform.io/providers/hashicorp/tls/latest/docs/resources/private_key) | resource |
-| [aws_ami.flatcar_stable_latest](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ami) | data source |
+| [aws_ami.main](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ami) | data source |
 | [aws_subnets.private](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/subnets) | data source |
 | [aws_subnets.public](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/subnets) | data source |
-| [ct_config.etcd-ignitions](https://registry.terraform.io/providers/poseidon/ct/0.10.0/docs/data-sources/config) | data source |
 
 ## Inputs
 
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
+| <a name="input_ami_architecture"></a> [ami\_architecture](#input\_ami\_architecture) | The architecture of the AMI to use for the etcd cluster. | `string` | `"x86_64"` | no |
+| <a name="input_ami_name_filter"></a> [ami\_name\_filter](#input\_ami\_name\_filter) | The name of the AMI to use for the etcd cluster. | `string` | `"amzn2-ami-hvm*"` | no |
+| <a name="input_ami_owner_id"></a> [ami\_owner\_id](#input\_ami\_owner\_id) | The AMI ID to use for the etcd cluster. | `string` | `"amazon"` | no |
 | <a name="input_cluster_name"></a> [cluster\_name](#input\_cluster\_name) | The name of the etcd cluster. | `string` | n/a | yes |
 | <a name="input_disk_iops"></a> [disk\_iops](#input\_disk\_iops) | IOPS of the EBS volume (e.g. 3000) | `number` | `3000` | no |
 | <a name="input_disk_size"></a> [disk\_size](#input\_disk\_size) | Size of the EBS volume in GB | `number` | `30` | no |
 | <a name="input_disk_type"></a> [disk\_type](#input\_disk\_type) | Type of the EBS volume (e.g. standard, gp2, gp3, io1) | `string` | `"gp3"` | no |
 | <a name="input_domain_name"></a> [domain\_name](#input\_domain\_name) | The domain to use for etcd DNS. | `string` | `"etcd.local"` | no |
-| <a name="input_etcd_snippets"></a> [etcd\_snippets](#input\_etcd\_snippets) | Etcd Container Linux Config snippets | `list(string)` | `[]` | no |
 | <a name="input_instance_type"></a> [instance\_type](#input\_instance\_type) | EC2 Instance Type | `string` | `"t3.small"` | no |
 | <a name="input_node_count"></a> [node\_count](#input\_node\_count) | The number of nodes in the cluster. | `number` | `3` | no |
 | <a name="input_region"></a> [region](#input\_region) | The region in which to create the cluster. | `string` | `"us-east-1"` | no |
@@ -66,7 +66,6 @@ No modules.
 
 | Name | Description |
 |------|-------------|
-| <a name="output_ct_configs"></a> [ct\_configs](#output\_ct\_configs) | ETCD Ignition configs |
 | <a name="output_etcd-endpoint"></a> [etcd-endpoint](#output\_etcd-endpoint) | ALB endpoint |
 | <a name="output_etcd_security_group_id"></a> [etcd\_security\_group\_id](#output\_etcd\_security\_group\_id) | The security group for etcd nodes |
 | <a name="output_etcd_ssh_private_key"></a> [etcd\_ssh\_private\_key](#output\_etcd\_ssh\_private\_key) | n/a |