diff --git a/udpserver.cpp b/udpserver.cpp
index c4ca777..71817a8 100644
--- a/udpserver.cpp
+++ b/udpserver.cpp
@@ -1,5 +1,6 @@
 /* g++ -o udpserver udpserver.cpp -std=c++11 json11.cpp -pthread -s -O2 */
 /* udpserver 127.0.0.1 10003 */
+/* Version 2022.04 */
 
 #include <iostream>
 #include <sstream>