diff --git a/osbase/kexec/kexec.go b/osbase/kexec/kexec.go
index f1f8d99..09d955b 100644
--- a/osbase/kexec/kexec.go
+++ b/osbase/kexec/kexec.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 //go:build amd64 || arm64 || riscv64
 // +build amd64 arm64 riscv64