1 files changed, 1 insertions, 1 deletions
diff --git a/chart.go b/chart.go
index b43f9f2..bbd276e 100644
--- a/chart.go
+++ b/chart.go
@@ -1,4 +1,4 @@
-// Copyright 2016 - 2021 The excelize Authors. All rights reserved. Use of
+// Copyright 2016 - 2022 The excelize Authors. All rights reserved. Use of
 // this source code is governed by a BSD-style license that can be found in
 // the LICENSE file.
 //