1 files changed, 1 insertions, 1 deletions
diff --git a/col.go b/col.go
index 5d4e764..f7e6bcd 100644
--- a/col.go
+++ b/col.go
@@ -1,4 +1,4 @@
-// Copyright 2016 - 2019 The excelize Authors. All rights reserved. Use of
+// Copyright 2016 - 2020 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.
 //