copyright: fix year ranges

Follow-up from 4d2f8006777

1 files changed, 1 insertions, 1 deletions

diff --git a/maketgz b/maketgz
index 1b10e91d4..2f97f18c3 100755
--- a/maketgz
+++ b/maketgz
@@ -9,7 +9,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms