diff --git a/libsndio/sioctl_open.3 b/libsndio/sioctl_open.3
index a990aa2..85f8beb 100644
--- a/libsndio/sioctl_open.3
+++ b/libsndio/sioctl_open.3
@@ -1,6 +1,6 @@
 .\" $OpenBSD$
 .\"
-.\" Copyright (c) 2011 Alexandre Ratchov <alex@caoua.org>
+.\" Copyright (c) 2011-2020 Alexandre Ratchov <alex@caoua.org>
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above