diff --git a/README.md b/README.md
index 457f0b5..cd70304 100644
--- a/README.md
+++ b/README.md
@@ -149,7 +149,7 @@ efs-csi-controller    0         5m
 | <a name="input_cluster_name"></a> [cluster\_name](#input\_cluster\_name) | EKS cluster name name component used through out the EKS cluster describing its purpose (ex: dice-dev) | `string` | n/a | yes |
 | <a name="input_cluster_version"></a> [cluster\_version](#input\_cluster\_version) | Kubernetes version to use for the EKS cluster | `string` | n/a | yes |
 | <a name="input_eks_instance_disk_size"></a> [eks\_instance\_disk\_size](#input\_eks\_instance\_disk\_size) | Size of the EKS node disk in GB | `number` | `80` | no |
-| <a name="input_eks_instance_types"></a> [eks\_instance\_types](#input\_eks\_instance\_types) | List of EC2 instance types for the EKS node group | `list(string)` | <pre>[<br/>  "t3a.large"<br/>]</pre> | no |
+| <a name="input_eks_instance_types"></a> [eks\_instance\_types](#input\_eks\_instance\_types) | List of EC2 instance types for the EKS node group | `list(string)` | <pre>[<br/>  "t4g.medium"<br/>]</pre> | no |
 | <a name="input_eks_ng_desired_size"></a> [eks\_ng\_desired\_size](#input\_eks\_ng\_desired\_size) | Desired size of the EKS node group | `number` | `4` | no |
 | <a name="input_eks_ng_max_size"></a> [eks\_ng\_max\_size](#input\_eks\_ng\_max\_size) | Maximum size of the EKS node group | `number` | `15` | no |
 | <a name="input_eks_ng_min_size"></a> [eks\_ng\_min\_size](#input\_eks\_ng\_min\_size) | Minimum size of the EKS node group | `number` | `4` | no |
diff --git a/main.tf b/main.tf
index ae2bf73..3983d0a 100644
--- a/main.tf
+++ b/main.tf
@@ -80,7 +80,7 @@ module "cluster" {
   }
 
   eks_managed_node_group_defaults = {
-    ami_type = "BOTTLEROCKET_x86_64"
+    ami_type = "BOTTLEROCKET_ARM_64_FIPS"
   }
 
   node_security_group_enable_recommended_rules = true
diff --git a/variables.tf b/variables.tf
index c8caa39..8f65969 100644
--- a/variables.tf
+++ b/variables.tf
@@ -67,7 +67,7 @@ variable "eks_instance_types" {
   description = "List of EC2 instance types for the EKS node group"
   type        = list(string)
   default = [
-    "t3a.large"
+    "t4g.medium"
   ]
   validation {
     condition     = length(var.eks_instance_types) > 0