diff --git a/ui_common.go b/ui_common.go
index 9cd6b1b..88976b3 100644
--- a/ui_common.go
+++ b/ui_common.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package cli
 
 import (
diff --git a/ui_js.go b/ui_js.go
index ac02693..9036fcb 100644
--- a/ui_js.go
+++ b/ui_js.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package cli
 
 import (