Index: head/en_US.ISO8859-1/articles/contributors/contrib.additional.xml
===================================================================
--- head/en_US.ISO8859-1/articles/contributors/contrib.additional.xml
+++ head/en_US.ISO8859-1/articles/contributors/contrib.additional.xml
@@ -9463,6 +9463,11 @@
   </listitem>
 
   <listitem>
+    <para>Sergey Matveev
+      <email>stargrave@stargrave.org</email></para>
+  </listitem>
+
+  <listitem>
     <para>Sergey N. Vorokov
       <email>serg@tmn.ru</email></para>
   </listitem>