diff --git a/modules/memcache/main.tf b/modules/memcache/main.tf
index 0037b6e..ceb5ddc 100644
--- a/modules/memcache/main.tf
+++ b/modules/memcache/main.tf
@@ -21,6 +21,7 @@ resource "google_memcache_instance" "self" {
   zones              = var.zones
   name               = var.name
   region             = var.region
+  memcache_version   = var.memcache_version
   authorized_network = var.authorized_network
   node_count         = var.node_count
   display_name       = var.display_name == null ? var.name : var.display_name
diff --git a/modules/memcache/variables.tf b/modules/memcache/variables.tf
index 5c0c688..495ad98 100644
--- a/modules/memcache/variables.tf
+++ b/modules/memcache/variables.tf
@@ -35,6 +35,12 @@ variable "name" {
   type        = string
 }
 
+variable "memcache_version" {
+  description = "The major version of Memcached software."
+  type        = 
+  default     = null
+}
+
 variable "authorized_network" {
   description = "The full name of the Google Compute Engine network to which the instance is connected. If left unspecified, the default network will be used."
   type        = string