diff --git a/internal/credential/attributes.go b/internal/credential/attributes.go
index 56364f6..95f79a6 100644
--- a/internal/credential/attributes.go
+++ b/internal/credential/attributes.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package credential
 
 import (
diff --git a/internal/credential/const.go b/internal/credential/const.go
index 7311d75..cde18e7 100644
--- a/internal/credential/const.go
+++ b/internal/credential/const.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package credential
 
 const (
diff --git a/internal/credential/state.go b/internal/credential/state.go
index d9e4fa6..9a5fba5 100644
--- a/internal/credential/state.go
+++ b/internal/credential/state.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package credential
 
 import (
diff --git a/internal/credential/state_test.go b/internal/credential/state_test.go
index ae5115d..e4b9546 100644
--- a/internal/credential/state_test.go
+++ b/internal/credential/state_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package credential
 
 import (
diff --git a/internal/credential/testing.go b/internal/credential/testing.go
index 2eeb688..35aaf06 100644
--- a/internal/credential/testing.go
+++ b/internal/credential/testing.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package credential
 
 import (
diff --git a/internal/errors/error.go b/internal/errors/error.go
index b3998ec..92f8a6e 100644
--- a/internal/errors/error.go
+++ b/internal/errors/error.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package errors
 
 import (
diff --git a/internal/values/proto.go b/internal/values/proto.go
index fa5cebf..fa050fa 100644
--- a/internal/values/proto.go
+++ b/internal/values/proto.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package values
 
 import (
diff --git a/internal/values/proto_test.go b/internal/values/proto_test.go
index 5b1bbad..b38fdd9 100644
--- a/internal/values/proto_test.go
+++ b/internal/values/proto_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package values
 
 import (
diff --git a/plugin/plugin.go b/plugin/plugin.go
index 0141748..32019b1 100644
--- a/plugin/plugin.go
+++ b/plugin/plugin.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package plugin
 
 import (
diff --git a/plugin/service/host/attributes.go b/plugin/service/host/attributes.go
index f123bfe..91c1be7 100644
--- a/plugin/service/host/attributes.go
+++ b/plugin/service/host/attributes.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package host
 
 import (
diff --git a/plugin/service/host/attributes_test.go b/plugin/service/host/attributes_test.go
index b6b4a78..2ed5d5d 100644
--- a/plugin/service/host/attributes_test.go
+++ b/plugin/service/host/attributes_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package host
 
 import (
diff --git a/plugin/service/host/const.go b/plugin/service/host/const.go
index ac97c24..660095d 100644
--- a/plugin/service/host/const.go
+++ b/plugin/service/host/const.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package host
 
 const (
diff --git a/plugin/service/host/plugin_test.go b/plugin/service/host/plugin_test.go
index 9064d8b..77689fa 100644
--- a/plugin/service/host/plugin_test.go
+++ b/plugin/service/host/plugin_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package host
 
 import (
diff --git a/plugin/service/host/state.go b/plugin/service/host/state.go
index 8122045..2acc223 100644
--- a/plugin/service/host/state.go
+++ b/plugin/service/host/state.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package host
 
 import (
diff --git a/plugin/service/host/state_test.go b/plugin/service/host/state_test.go
index ddfd017..b1a31bb 100644
--- a/plugin/service/host/state_test.go
+++ b/plugin/service/host/state_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package host
 
 import (
diff --git a/plugin/service/host/testing.go b/plugin/service/host/testing.go
index 19bce96..8f5e72e 100644
--- a/plugin/service/host/testing.go
+++ b/plugin/service/host/testing.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package host
 
 import (
diff --git a/plugin/service/storage/attributes.go b/plugin/service/storage/attributes.go
index 2e6401b..b357839 100644
--- a/plugin/service/storage/attributes.go
+++ b/plugin/service/storage/attributes.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package storage
 
 import (
diff --git a/plugin/service/storage/attributes_test.go b/plugin/service/storage/attributes_test.go
index 3c792ec..4dfaac6 100644
--- a/plugin/service/storage/attributes_test.go
+++ b/plugin/service/storage/attributes_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package storage
 
 import (
diff --git a/plugin/service/storage/const.go b/plugin/service/storage/const.go
index f3a4557..3699741 100644
--- a/plugin/service/storage/const.go
+++ b/plugin/service/storage/const.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package storage
 
 const (
diff --git a/plugin/service/storage/plugin.go b/plugin/service/storage/plugin.go
index 52696ac..497870c 100644
--- a/plugin/service/storage/plugin.go
+++ b/plugin/service/storage/plugin.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package storage
 
 import (
diff --git a/plugin/service/storage/plugin_test.go b/plugin/service/storage/plugin_test.go
index 3f9b029..1f01cc2 100644
--- a/plugin/service/storage/plugin_test.go
+++ b/plugin/service/storage/plugin_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package storage
 
 import (
diff --git a/plugin/service/storage/state.go b/plugin/service/storage/state.go
index 4a7f5be..ed769f3 100644
--- a/plugin/service/storage/state.go
+++ b/plugin/service/storage/state.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package storage
 
 import (
diff --git a/plugin/service/storage/state_test.go b/plugin/service/storage/state_test.go
index 15e7c70..2a139b9 100644
--- a/plugin/service/storage/state_test.go
+++ b/plugin/service/storage/state_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package storage
 
 import (
diff --git a/plugin/service/storage/testing.go b/plugin/service/storage/testing.go
index 052a1cc..50e4521 100644
--- a/plugin/service/storage/testing.go
+++ b/plugin/service/storage/testing.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package storage
 
 import (