diff --git a/ina260/ina260.go b/ina260/ina260.go
index 7e06693..5aa73a0 100644
--- a/ina260/ina260.go
+++ b/ina260/ina260.go
@@ -1,3 +1,7 @@
+// Copyright 2023 The Periph Authors. All rights reserved.
+// Use of this source code is governed under the Apache License, Version 2.0
+// that can be found in the LICENSE file.
+
 package ina260
 
 import (