diff --git a/main.tf b/main.tf
index 32271b60..d743310e 100644
--- a/main.tf
+++ b/main.tf
@@ -210,16 +210,20 @@ module "security-group" {
 
 
 module "s3-storage" {
-  source                = "app.terraform.io/indico/indico-aws-buckets/mod"
-  version               = "3.3.1"
-  force_destroy         = true # allows terraform to destroy non-empty buckets.
-  label                 = var.label
-  kms_key_arn           = module.kms_key.key.arn
-  submission_expiry     = var.submission_expiry
-  uploads_expiry        = var.uploads_expiry
-  include_rox           = var.include_rox
-  enable_backup         = var.enable_s3_backup
-  enable_access_logging = var.enable_s3_access_logging
+  source                    = "app.terraform.io/indico/indico-aws-buckets/mod"
+  version                   = "4.0.0"
+  force_destroy             = true # allows terraform to destroy non-empty buckets.
+  label                     = var.label
+  kms_key_arn               = module.kms_key.key.arn
+  submission_expiry         = var.submission_expiry
+  uploads_expiry            = var.uploads_expiry
+  include_rox               = var.include_rox
+  enable_backup             = var.enable_s3_backup
+  enable_access_logging     = var.enable_s3_access_logging
+  bucket_type               = var.bucket_type
+  data_s3_bucket_name       = var.data_s3_bucket_name
+  api_models_s3_bucket_name = var.api_models_s3_bucket_name
+  pgbackup_s3_bucket_name   = var.pgbackup_s3_bucket_name
 }
 
 
diff --git a/outputs.tf b/outputs.tf
index bc5bd026..fb0b04e6 100644
--- a/outputs.tf
+++ b/outputs.tf
@@ -9,12 +9,16 @@ output "data_s3_bucket_name" {
   value       = module.s3-storage.data_s3_bucket_name
 }
 
+output "pgbackup_s3_bucket_name" {
+  description = "Name of the pgbackup s3 bucket"
+  value       = module.s3-storage.pgbackup_s3_bucket_name
+}
+
 output "s3_role_id" {
   description = "ID of the S3 role"
   value       = module.cluster.s3_role_id
 }
 
-
 output "efs_filesystem_id" {
   description = "ID of the EFS filesystem"
   value       = var.include_efs == true ? module.efs-storage[0].efs_filesystem_id : ""
diff --git a/variables.tf b/variables.tf
index 463c087e..48731db6 100644
--- a/variables.tf
+++ b/variables.tf
@@ -824,50 +824,50 @@ variable "harness_mount_path" {
 }
 
 variable "lambda_sns_forwarder_enabled" {
-  type = bool
-  default = false
+  type        = bool
+  default     = false
   description = "If enabled a lamda will be provisioned to forward sns messages to an external endpoint."
 }
 
 variable "lambda_sns_forwarder_destination_endpoint" {
-  type = string
-  default = ""
+  type        = string
+  default     = ""
   description = "destination URL for the lambda sns forwarder"
 }
 
 variable "lambda_sns_forwarder_topic_arn" {
-  type = string
-  default = ""
+  type        = string
+  default     = ""
   description = "SNS topic to triger lambda forwarder."
 }
 
 variable "lambda_sns_forwarder_github_organization" {
-  type = string
-  default = "IndicoDataSolutions"
+  type        = string
+  default     = "IndicoDataSolutions"
   description = "The github organization containing the lambda_sns_forwarder code to use"
 }
 
 variable "lambda_sns_forwarder_github_repository" {
-  type = string
-  default = ""
+  type        = string
+  default     = ""
   description = "The github repository containing the lambda_sns_forwarder code to use"
 }
 
 variable "lambda_sns_forwarder_github_branch" {
-  type = string
-  default = "main"
+  type        = string
+  default     = "main"
   description = "The github branch / tag containing the lambda_sns_forwarder code to use"
 }
 
 variable "lambda_sns_forwarder_github_zip_path" {
-  type      = string
-  default   = "zip/lambda.zip"
+  type        = string
+  default     = "zip/lambda.zip"
   description = "Full path to the lambda zip file"
 }
 
 variable "lambda_sns_forwarder_function_variables" {
-  type = map
-  default = {}
+  type        = map(any)
+  default     = {}
   description = "A map of variables for the lambda_sns_forwarder code to use"
 }
 
@@ -1043,3 +1043,30 @@ variable "instance_volume_type" {
   default     = "gp2"
   description = "The type of EBS volume to attach to the cluster nodes"
 }
+
+variable "bucket_type" {
+  type    = string
+  default = "create"
+  validation {
+    condition     = var.bucket_type == "create" || var.bucket_type == "load"
+    error_message = "${var.bucket_type} not valid. Type must be either create or load"
+  }
+}
+
+variable "data_s3_bucket_name" {
+  type        = string
+  default     = ""
+  description = "The name of the existing S3 bucket to be loaded and used as the data bucket"
+}
+
+variable "api_models_s3_bucket_name" {
+  type        = string
+  default     = ""
+  description = "The name of the existing S3 bucket to be loaded and used as the API model bucket"
+}
+
+variable "pgbackup_s3_bucket_name" {
+  type        = string
+  default     = ""
+  description = "The name of the existing S3 bucket to be loaded and used as the postgres backup bucket"
+}