diff --git a/README.md b/README.md
index b823cbb..274f102 100644
--- a/README.md
+++ b/README.md
@@ -592,7 +592,7 @@ Encryption is enabled at all AWS resources that are created by Terraform:
 | <a name="input_public_subnet_ids"></a> [public\_subnet\_ids](#input\_public\_subnet\_ids) | List of IDs for the public subnets. | `list(any)` | `[]` | no |
 | <a name="input_rtMaps_link"></a> [rtMaps\_link](#input\_rtMaps\_link) | Download link for RTMaps license server. | `string` | `"http://dl.intempora.com/RTMaps4/rtmaps_4.9.0_ubuntu1804_x86_64_release.tar.bz2"` | no |
 | <a name="input_scan_schedule"></a> [scan\_schedule](#input\_scan\_schedule) | 6-field Cron expression describing the scan maintenance schedule. Must not overlap with variable install\_schedule. | `string` | `"cron(0 0 * * ? *)"` | no |
-| <a name="input_simpheraInstances"></a> [simpheraInstances](#input\_simpheraInstances) | A list containing the individual SIMPHERA instances, such as 'staging' and 'production'. | <pre>map(object({<br>    name                         = string<br>    postgresqlApplyImmediately   = bool<br>    postgresqlVersion            = string<br>    postgresqlStorage            = number<br>    postgresqlMaxStorage         = number<br>    db_instance_type_simphera    = string<br>    enable_keycloak              = bool<br>    postgresqlStorageKeycloak    = number<br>    postgresqlMaxStorageKeycloak = number<br>    db_instance_type_keycloak    = string<br>    k8s_namespace                = string<br>    secretname                   = string<br>    enable_backup_service        = bool<br>    backup_retention             = number<br>    enable_deletion_protection   = bool<br><br>  }))</pre> | <pre>{<br>  "production": {<br>    "backup_retention": 35,<br>    "db_instance_type_keycloak": "db.t3.large",<br>    "db_instance_type_simphera": "db.t3.large",<br>    "enable_backup_service": true,<br>    "enable_deletion_protection": true,<br>    "enable_keycloak": true,<br>    "k8s_namespace": "simphera",<br>    "name": "production",<br>    "postgresqlApplyImmediately": false,<br>    "postgresqlMaxStorage": 100,<br>    "postgresqlMaxStorageKeycloak": 100,<br>    "postgresqlStorage": 20,<br>    "postgresqlStorageKeycloak": 20,<br>    "postgresqlVersion": "16",<br>    "secretname": "aws-simphera-dev-production"<br>  }<br>}</pre> | no |
+| <a name="input_simpheraInstances"></a> [simpheraInstances](#input\_simpheraInstances) | A list containing the individual SIMPHERA instances, such as 'staging' and 'production'. | <pre>map(object({<br>    name                         = string<br>    postgresqlApplyImmediately   = bool<br>    postgresqlVersion            = string<br>    postgresqlStorage            = number<br>    postgresqlMaxStorage         = number<br>    db_instance_type_simphera    = string<br>    enable_keycloak              = bool<br>    postgresqlStorageKeycloak    = number<br>    postgresqlMaxStorageKeycloak = number<br>    db_instance_type_keycloak    = string<br>    k8s_namespace                = string<br>    secretname                   = string<br>    enable_backup_service        = bool<br>    backup_retention             = number<br>    enable_deletion_protection   = bool<br><br>  }))</pre> | <pre>{<br>  "production": {<br>    "backup_retention": 35,<br>    "db_instance_type_keycloak": "db.t4g.large",<br>    "db_instance_type_simphera": "db.t4g.large",<br>    "enable_backup_service": true,<br>    "enable_deletion_protection": true,<br>    "enable_keycloak": true,<br>    "k8s_namespace": "simphera",<br>    "name": "production",<br>    "postgresqlApplyImmediately": false,<br>    "postgresqlMaxStorage": 100,<br>    "postgresqlMaxStorageKeycloak": 100,<br>    "postgresqlStorage": 20,<br>    "postgresqlStorageKeycloak": 20,<br>    "postgresqlVersion": "16",<br>    "secretname": "aws-simphera-dev-production"<br>  }<br>}</pre> | no |
 | <a name="input_tags"></a> [tags](#input\_tags) | The tags to be added to all resources. | `map(any)` | `{}` | no |
 | <a name="input_vpcCidr"></a> [vpcCidr](#input\_vpcCidr) | The CIDR for the virtual private cluster. | `string` | `"10.1.0.0/18"` | no |
 | <a name="input_vpcId"></a> [vpcId](#input\_vpcId) | The ID of preconfigured VPC. Change from 'null' to use already existing VPC. | `string` | `null` | no |
diff --git a/terraform.json.example b/terraform.json.example
index 2db4cb6..9807987 100644
--- a/terraform.json.example
+++ b/terraform.json.example
@@ -69,8 +69,8 @@
   "simpheraInstances": {
     "production": {
       "backup_retention": 35,
-      "db_instance_type_keycloak": "db.t3.large",
-      "db_instance_type_simphera": "db.t3.large",
+      "db_instance_type_keycloak": "db.t4g.large",
+      "db_instance_type_simphera": "db.t4g.large",
       "enable_backup_service": true,
       "enable_deletion_protection": true,
       "enable_keycloak": true,
diff --git a/terraform.tfvars.example b/terraform.tfvars.example
index 495acf0..7bd956a 100644
--- a/terraform.tfvars.example
+++ b/terraform.tfvars.example
@@ -168,8 +168,8 @@ scan_schedule = "cron(0 0 * * ? *)"
 simpheraInstances = {
   "production": {
     "backup_retention": 35,
-    "db_instance_type_keycloak": "db.t3.large",
-    "db_instance_type_simphera": "db.t3.large",
+    "db_instance_type_keycloak": "db.t4g.large",
+    "db_instance_type_simphera": "db.t4g.large",
     "enable_backup_service": true,
     "enable_deletion_protection": true,
     "enable_keycloak": true,
diff --git a/variables.tf b/variables.tf
index a0cff88..6497bb2 100644
--- a/variables.tf
+++ b/variables.tf
@@ -285,8 +285,8 @@ variable "simpheraInstances" {
       enable_keycloak              = true
       postgresqlStorageKeycloak    = 20
       postgresqlMaxStorageKeycloak = 100
-      db_instance_type_keycloak    = "db.t3.large"
-      db_instance_type_simphera    = "db.t3.large"
+      db_instance_type_keycloak    = "db.t4g.large"
+      db_instance_type_simphera    = "db.t4g.large"
       k8s_namespace                = "simphera"
       secretname                   = "aws-simphera-dev-production"
       enable_backup_service        = true