diff --git a/unitree_legged_real/src/exe/ros_server_udp.cpp b/unitree_legged_real/src/exe/ros_server_udp.cpp
index 6d3ee4f..5bcddf9 100644
--- a/unitree_legged_real/src/exe/ros_server_udp.cpp
+++ b/unitree_legged_real/src/exe/ros_server_udp.cpp
@@ -1,5 +1,5 @@
 /************************************************************************
-Copyright (c) 2020, Kei Okada. All rights reserved.
+Copyright (c) 2022, Kei Okada. All rights reserved.
 Use of this source code is governed by the MPL-2.0 license, see LICENSE.
 ************************************************************************/