diff --git a/README.md b/README.md
index b976aa7..3beabf8 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,7 @@ module "example_team_rds" {
   is-production          = "false"
   environment-name       = "development"
   infrastructure-support = "example-team@digtal.justice.gov.uk"
+  rds_family             = "postgres10"
 
   providers = {
     # This can be either "aws.london" or "aws.ireland:
@@ -62,6 +63,8 @@ For more details, be sure to read [this example](example/rds.tf)
 | force_ssl | Enforce SSL connections | boolean | `false` | no |
 | snapshot_identifier | Specifies whether or not to create this database from a snapshot. This correlates to the snapshot ID you'd find in the RDS console. | string | | no |
 | providers | provider (and region) creating the resources |  arrays of string | default provider | no |
+| rds_family | rds configuration version | string | `postgres10` | no  |
+
 
 ### Tags
 
diff --git a/example/rds.tf b/example/rds.tf
index 3eadf08..f8713c3 100644
--- a/example/rds.tf
+++ b/example/rds.tf
@@ -15,17 +15,23 @@ variable "cluster_state_bucket" {}
  *
  */
 module "example_team_rds" {
-  source                 = "github.com/ministryofjustice/cloud-platform-terraform-rds-instance?ref=4.3"
+  source                 = "github.com/ministryofjustice/cloud-platform-terraform-rds-instance?ref=4.5"
   cluster_name           = "${var.cluster_name}"
   cluster_state_bucket   = "${var.cluster_state_bucket}"
   team_name              = "example-repo"
   business-unit          = "example-bu"
   application            = "exampleapp"
   is-production          = "false"
+  # change the postgres version as you see fit.
+  db_engine_version      = "10"                                                                        
   environment-name       = "development"
   infrastructure-support = "example-team@digtal.justice.gov.uk"
   force_ssl              = "true"
 
+  # rds_family should be one of: postgres9.4, postgres9.5, postgres9.6, postgres10, postgres11
+  # Pick the one that defines the postgres version the best
+  rds_family = "postgres10"
+
   # use "allow_major_version_upgrade" when upgrading the major version of an engine
   allow_major_version_upgrade = "true"
 
diff --git a/main.tf b/main.tf
index 226db5a..99d6be3 100644
--- a/main.tf
+++ b/main.tf
@@ -122,7 +122,7 @@ resource "aws_db_instance" "rds" {
 
 resource "aws_db_parameter_group" "custom_parameters" {
   name   = "${local.identifier}"
-  family = "postgres10"
+  family = "${var.rds_family}"
 
   parameter {
     name  = "rds.force_ssl"
diff --git a/variables.tf b/variables.tf
index 2eee9ec..16d6a90 100644
--- a/variables.tf
+++ b/variables.tf
@@ -75,8 +75,7 @@ variable "force_ssl" {
   default     = "false"
 }
 
-#Deprecated from v3.2
-variable "aws_region" {
-  description = "Region into which the resource will be created."
-  default     = "eu-west-2"
+variable "rds_family" {
+  description = "Maps the postgres version with the rds family, a family often covers several versions"
+  default     = "postgres10"
 }