diff --git a/.terraform-version b/.terraform-version
index 75cbdc3..10c0880 100644
--- a/.terraform-version
+++ b/.terraform-version
@@ -1 +1 @@
-min-required
+1.7.4
diff --git a/mta-sts.tf b/mta-sts.tf
index 8255b43..cee112b 100644
--- a/mta-sts.tf
+++ b/mta-sts.tf
@@ -10,8 +10,9 @@ locals {
 resource "cloudflare_worker_script" "mta-sts" {
   for_each = local.email_domain_zones
 
-  name    = "mta-sts-${replace(each.value.zone, ".", "-")}"
-  content = <<EOC
+  account_id = var.cloudflare_account_id
+  name       = "mta-sts-${replace(each.value.zone, ".", "-")}"
+  content    = <<EOC
     async function handleRequest(request) {
       return new Response(`${local.mta_sts_content}`, {
         headers: {
diff --git a/variables.tf b/variables.tf
index 202a9d5..b325749 100644
--- a/variables.tf
+++ b/variables.tf
@@ -4,6 +4,10 @@ variable "aws_iam_path_prefix" {
   default     = ""
 }
 
+variable "cloudflare_account_id" {
+  type = string
+}
+
 # Remove once https://github.com/cloudflare/terraform-provider-cloudflare/issues/1921
 variable "cloudflare_workers_subdomain" {
   description = "Cloudflare account <subdomain>.workers.dev - https://dash.cloudflare.com/workers/subdomain"
diff --git a/versions.tf b/versions.tf
index 077c4c7..4ee1a02 100644
--- a/versions.tf
+++ b/versions.tf
@@ -5,11 +5,11 @@ terraform {
     }
     cloudflare = {
       source  = "cloudflare/cloudflare"
-      version = "~> 3.0.0"
+      version = "~> 4.26.0"
     }
     random = {
       source = "hashicorp/random"
     }
   }
-  required_version = "~> 1.0"
+  required_version = "~> 1.7"
 }