[COMPLIANCE] Add Copyright and License Headers
diff --git a/errwrap.go b/errwrap.go
index 44e368e..9a080e7 100644
--- a/errwrap.go
+++ b/errwrap.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
// Package errwrap implements methods to formalize error wrapping in Go.
//
// All of the top-level functions that take an `error` are built to be able
diff --git a/errwrap_test.go b/errwrap_test.go
index 8c16a56..2ef422d 100644
--- a/errwrap_test.go
+++ b/errwrap_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
package errwrap
import (
