diff --git a/elasticache.tf b/elasticache.tf
index 7f5ac7b..bf9dd00 100644
--- a/elasticache.tf
+++ b/elasticache.tf
@@ -1,3 +1,6 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 resource "aws_security_group" "default" {
   name_prefix = "${var.namespace}"
   vpc_id      = "${aws_vpc.default.id}"
diff --git a/network.tf b/network.tf
index 578bfde..d07c3c8 100644
--- a/network.tf
+++ b/network.tf
@@ -1,3 +1,6 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 # Create a VPC to launch our instances into
 resource "aws_vpc" "default" {
   cidr_block           = "${var.vpc_cidr_block}"
diff --git a/output.tf b/output.tf
index 843f99a..283f3cf 100644
--- a/output.tf
+++ b/output.tf
@@ -1,3 +1,6 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 output "configuration_endpoint_address" {
   value = "${aws_elasticache_replication_group.default.configuration_endpoint_address}"
 }
diff --git a/ssh.tf b/ssh.tf
index e7773c2..695f3df 100644
--- a/ssh.tf
+++ b/ssh.tf
@@ -1,3 +1,6 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 # Get the list of official Canonical Ubuntu 16.04 AMIs
 data "aws_ami" "ubuntu-1604" {
   most_recent = true
diff --git a/terraform.tfvars b/terraform.tfvars
index fead1cf..0045a6d 100644
--- a/terraform.tfvars
+++ b/terraform.tfvars
@@ -1,3 +1,6 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 namespace = "elasticache-tutorial"
 
 cluster_id = "redis-cluster"
diff --git a/variables.tf b/variables.tf
index 459de93..8c4db88 100644
--- a/variables.tf
+++ b/variables.tf
@@ -1,3 +1,6 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 variable "vpc_cidr_block" {
   description = "The top-level CIDR block for the VPC."
   default     = "10.1.0.0/16"