diff --git a/raft-compat/rolling_upgrade_test.go b/raft-compat/rolling_upgrade_test.go
index a18eaa25..59bdde65 100644
--- a/raft-compat/rolling_upgrade_test.go
+++ b/raft-compat/rolling_upgrade_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package raft_compat
 
 import (
diff --git a/raft-compat/testcluster/cluster.go b/raft-compat/testcluster/cluster.go
index 4096b606..4c394685 100644
--- a/raft-compat/testcluster/cluster.go
+++ b/raft-compat/testcluster/cluster.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package testcluster
 
 import (
diff --git a/raft-compat/utils/test_utils.go b/raft-compat/utils/test_utils.go
index 0b0b18c6..39d88333 100644
--- a/raft-compat/utils/test_utils.go
+++ b/raft-compat/utils/test_utils.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package utils
 
 import (