diff --git a/main.tf b/main.tf
index 482b433..40344ef 100644
--- a/main.tf
+++ b/main.tf
@@ -1,3 +1,6 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 provider "aws" {
   region = var.region
 }
diff --git a/outputs.tf b/outputs.tf
index 30f1ad9..c09edba 100644
--- a/outputs.tf
+++ b/outputs.tf
@@ -1,3 +1,6 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 output "website_endpoint" {
   description = "HTTP endpoint for example website."
   value       = module.s3-webapp.endpoint
diff --git a/terraform.tf b/terraform.tf
index 68871a6..82982bb 100644
--- a/terraform.tf
+++ b/terraform.tf
@@ -1,3 +1,6 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 terraform {
   required_providers {
     aws = {
diff --git a/variables.tf b/variables.tf
index b0531cf..ec11930 100644
--- a/variables.tf
+++ b/variables.tf
@@ -1,3 +1,6 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 variable "region" {
   description = "This is the cloud hosting region where your webapp will be deployed."
   type        = string