diff --git a/main.tf b/main.tf
index 206132c..ad579de 100644
--- a/main.tf
+++ b/main.tf
@@ -142,6 +142,7 @@ resource "aws_elasticache_replication_group" "default" {
   snapshot_retention_limit   = var.snapshot_retention_limit
   final_snapshot_identifier  = var.final_snapshot_identifier
   apply_immediately          = var.apply_immediately
+  data_tiering_enabled       = var.data_tiering_enabled
 
   dynamic "log_delivery_configuration" {
     for_each = var.log_delivery_configuration
diff --git a/variables.tf b/variables.tf
index 4e105d3..ac923a3 100644
--- a/variables.tf
+++ b/variables.tf
@@ -112,6 +112,12 @@ variable "apply_immediately" {
   description = "Apply changes immediately"
 }
 
+variable "data_tiering_enabled" {
+  type        = bool
+  default     = false
+  description = "Enables data tiering. Data tiering is only supported for replication groups using the r6gd node type. See: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/elasticache_replication_group#data_tiering_enabled"
+}
+
 variable "automatic_failover_enabled" {
   type        = bool
   default     = false