diff --git a/internal/command/modules_test.go b/internal/command/modules_test.go
index 683d958980..678895ce5f 100644
--- a/internal/command/modules_test.go
+++ b/internal/command/modules_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package command
 
 import (
diff --git a/internal/moduleref/record.go b/internal/moduleref/record.go
index 6f3d3990b8..53877b17a4 100644
--- a/internal/moduleref/record.go
+++ b/internal/moduleref/record.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package moduleref
 
 import "github.com/hashicorp/terraform/internal/modsdir"
diff --git a/internal/moduleref/resolver.go b/internal/moduleref/resolver.go
index 99ef304389..616054087f 100644
--- a/internal/moduleref/resolver.go
+++ b/internal/moduleref/resolver.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package moduleref
 
 import (
diff --git a/internal/moduleref/resolver_test.go b/internal/moduleref/resolver_test.go
index 3cf92c2222..fdd4654e09 100644
--- a/internal/moduleref/resolver_test.go
+++ b/internal/moduleref/resolver_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package moduleref
 
 import (