diff --git a/zhnumber/zhnumber.dtx b/zhnumber/zhnumber.dtx
index 85dddaf0..4c95b057 100644
--- a/zhnumber/zhnumber.dtx
+++ b/zhnumber/zhnumber.dtx
@@ -44,7 +44,7 @@ Issues and pull requests are welcome.
 Copyright and Licence
 ---------------------
 
-    Copyright (C) 2012, 2014-2020 by Qing Lee <sobenlee@gmail.com>
+    Copyright (C) 2012, 2014-2020, 2022 by Qing Lee <sobenlee@gmail.com>
     ----------------------------------------------------------------------
 
     This work may be distributed and/or modified under the
@@ -83,7 +83,7 @@ Copyright and Licence
 
 \preamble
 
-    Copyright (C) 2012, 2014-2020 by Qing Lee <sobenlee@gmail.com>
+    Copyright (C) 2012, 2014-2020, 2022 by Qing Lee <sobenlee@gmail.com>
 --------------------------------------------------------------------------
 
     This work may be distributed and/or modified under the
@@ -150,7 +150,7 @@ Copyright and Licence
 %<config&utf8>\ProvidesExplFile{\ExplFileName-utf8.cfg}
 %<config&big5>\ProvidesExplFile{\ExplFileName-big5.cfg}
 %<config&gbk>\ProvidesExplFile{\ExplFileName-gbk.cfg}
-%<package|config>  {\ExplFileDate}{2.8}{\ExplFileDescription}
+%<package|config>  {\ExplFileDate}{3.0}{\ExplFileDescription}
 %<*driver>
 \documentclass{ctxdoc}
 \SideBySideExampleSet{xrightmargin=.6\linewidth}