diff --git a/internal/backend/local/test.go b/internal/backend/local/test.go
index ca8654477e..76892d18e4 100644
--- a/internal/backend/local/test.go
+++ b/internal/backend/local/test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package local
 
 import (
diff --git a/internal/backend/remote-state/s3/errors.go b/internal/backend/remote-state/s3/errors.go
index 1b2e93bf99..065e652c9a 100644
--- a/internal/backend/remote-state/s3/errors.go
+++ b/internal/backend/remote-state/s3/errors.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package s3
 
 import (
diff --git a/internal/cloudplugin/binary.go b/internal/cloudplugin/binary.go
index a4d2744c97..6bf5bbb458 100644
--- a/internal/cloudplugin/binary.go
+++ b/internal/cloudplugin/binary.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package cloudplugin
 
 import (
diff --git a/internal/cloudplugin/binary_test.go b/internal/cloudplugin/binary_test.go
index e1839ab463..40140015b5 100644
--- a/internal/cloudplugin/binary_test.go
+++ b/internal/cloudplugin/binary_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package cloudplugin
 
 import (
diff --git a/internal/cloudplugin/client.go b/internal/cloudplugin/client.go
index 872ad516d8..54f7e04809 100644
--- a/internal/cloudplugin/client.go
+++ b/internal/cloudplugin/client.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package cloudplugin
 
 import (
diff --git a/internal/cloudplugin/client_test.go b/internal/cloudplugin/client_test.go
index 9898da3c3a..8e73afe622 100644
--- a/internal/cloudplugin/client_test.go
+++ b/internal/cloudplugin/client_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package cloudplugin
 
 import (
diff --git a/internal/cloudplugin/errors.go b/internal/cloudplugin/errors.go
index a208aa3802..4c3d9755b0 100644
--- a/internal/cloudplugin/errors.go
+++ b/internal/cloudplugin/errors.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package cloudplugin
 
 import (
diff --git a/internal/cloudplugin/testing.go b/internal/cloudplugin/testing.go
index 4724a42a12..cafe688279 100644
--- a/internal/cloudplugin/testing.go
+++ b/internal/cloudplugin/testing.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package cloudplugin
 
 import (
diff --git a/internal/command/cloud_test.go b/internal/command/cloud_test.go
index 0a72353959..2edd8f2bcf 100644
--- a/internal/command/cloud_test.go
+++ b/internal/command/cloud_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package command
 
 import (
diff --git a/internal/releaseauth/all.go b/internal/releaseauth/all.go
index 2b69bac4c5..95c027d138 100644
--- a/internal/releaseauth/all.go
+++ b/internal/releaseauth/all.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package releaseauth
 
 // Authenticator is a generic interface for interacting with types that authenticate
diff --git a/internal/releaseauth/all_test.go b/internal/releaseauth/all_test.go
index bd8dc38032..4daab7c410 100644
--- a/internal/releaseauth/all_test.go
+++ b/internal/releaseauth/all_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package releaseauth
 
 import (
diff --git a/internal/releaseauth/checksum.go b/internal/releaseauth/checksum.go
index a30248609b..d46addd5f7 100644
--- a/internal/releaseauth/checksum.go
+++ b/internal/releaseauth/checksum.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package releaseauth
 
 import (
diff --git a/internal/releaseauth/doc.go b/internal/releaseauth/doc.go
index a6ad34f4fd..23d8c36bf9 100644
--- a/internal/releaseauth/doc.go
+++ b/internal/releaseauth/doc.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 // Package releaseauth helps authenticates archives downloaded from a service
 // like releases.hashicorp.com by providing some simple authentication tools:
 //
diff --git a/internal/releaseauth/hash.go b/internal/releaseauth/hash.go
index ed95743485..1a8105d610 100644
--- a/internal/releaseauth/hash.go
+++ b/internal/releaseauth/hash.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package releaseauth
 
 import (
diff --git a/internal/releaseauth/matching_sums.go b/internal/releaseauth/matching_sums.go
index a44a41fab6..6201269e34 100644
--- a/internal/releaseauth/matching_sums.go
+++ b/internal/releaseauth/matching_sums.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package releaseauth
 
 import "fmt"
diff --git a/internal/releaseauth/signature.go b/internal/releaseauth/signature.go
index f1124b65c6..d70071a406 100644
--- a/internal/releaseauth/signature.go
+++ b/internal/releaseauth/signature.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package releaseauth
 
 import (