diff --git a/helpers.go b/helpers.go
index 80a8632a..69489504 100644
--- a/helpers.go
+++ b/helpers.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package kubeauth
 
 import (
diff --git a/integrationtest/vault/namespaceControllerBinding.yaml b/integrationtest/vault/namespaceControllerBinding.yaml
index eafcac49..a4e138dc 100644
--- a/integrationtest/vault/namespaceControllerBinding.yaml
+++ b/integrationtest/vault/namespaceControllerBinding.yaml
@@ -1,3 +1,6 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding
 metadata:
diff --git a/namespace_validator.go b/namespace_validator.go
index 145c729a..57b6530e 100644
--- a/namespace_validator.go
+++ b/namespace_validator.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package kubeauth
 
 import (