diff --git a/main.tf b/main.tf
index da79b14..6259892 100644
--- a/main.tf
+++ b/main.tf
@@ -133,6 +133,7 @@ resource "google_cloudfunctions_function" "main" {
   project                     = var.project_id
   region                      = var.region
   service_account_email       = var.service_account_email
+  build_service_account       = var.build_service_account
   build_environment_variables = var.build_environment_variables
   docker_registry             = var.docker_registry
   docker_repository           = var.docker_repository
diff --git a/variables.tf b/variables.tf
index fee2e9b..aa70635 100644
--- a/variables.tf
+++ b/variables.tf
@@ -20,6 +20,12 @@ variable "available_memory_mb" {
   description = "The amount of memory in megabytes allotted for the function to use."
 }
 
+variable "build_service_account" {
+  type        = string
+  default     = null
+  description = " The self-provided service account to use to build the function. The format of this value is projects/{project}/serviceAccounts/{serviceAccountEmail}"
+}
+
 variable "description" {
   type        = string
   default     = "Processes events."
diff --git a/versions.tf b/versions.tf
index 6ac3c56..a5e9d38 100644
--- a/versions.tf
+++ b/versions.tf
@@ -20,7 +20,7 @@ terraform {
 
     google = {
       source  = "hashicorp/google"
-      version = ">= 4.23, < 7"
+      version = ">= 5.39, < 7"
     }
     null = {
       source  = "hashicorp/null"