diff --git a/en_US.ISO8859-1/articles/contributors/contrib.additional.sgml b/en_US.ISO8859-1/articles/contributors/contrib.additional.sgml
index 6406007b57..86be632b68 100644
--- a/en_US.ISO8859-1/articles/contributors/contrib.additional.sgml
+++ b/en_US.ISO8859-1/articles/contributors/contrib.additional.sgml
@@ -10729,6 +10729,11 @@
 	<email>yftzeng@gmail.com</email></para>
     </listitem>
 
+    <listitem>
+      <para>Yi-Hsuan Hsin
+	<email>mhsin@mhsin.org</email></para>
+    </listitem>
+
     <listitem>
       <para>Ying-Chieh Chen
 	<email>yinjieh@csie.nctu.edu.tw</email></para>