diff --git a/plugin/network_processor.go b/plugin/network_processor.go
index 3920932..9fc0734 100644
--- a/plugin/network_processor.go
+++ b/plugin/network_processor.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package plugin
 
 import (
diff --git a/plugin/vm_processor.go b/plugin/vm_processor.go
index 1f3da91..3230fd1 100644
--- a/plugin/vm_processor.go
+++ b/plugin/vm_processor.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package plugin
 
 import (
diff --git a/plugin/vmss_processor.go b/plugin/vmss_processor.go
index b3304e1..f8c8274 100644
--- a/plugin/vmss_processor.go
+++ b/plugin/vmss_processor.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package plugin
 
 import (
diff --git a/plugin/vmss_processor_test.go b/plugin/vmss_processor_test.go
index 01f12f9..afafd11 100644
--- a/plugin/vmss_processor_test.go
+++ b/plugin/vmss_processor_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package plugin
 
 import (