diff --git a/en_US.ISO8859-1/articles/contributors/article.sgml b/en_US.ISO8859-1/articles/contributors/article.sgml
index e60fb73870..8b7bb588fe 100644
--- a/en_US.ISO8859-1/articles/contributors/article.sgml
+++ b/en_US.ISO8859-1/articles/contributors/article.sgml
@@ -6446,6 +6446,10 @@
 	<para>Sergei Chechetkin <email>csl@whale.sunbay.crimea.ua</email></para>
       </listitem>
 
+      <listitem>
+	<para>Sergei Kolobov <email>sergei@kolobov.com</email></para>
+      </listitem>
+
       <listitem>
 	<para>Sergei S. Laskavy <email>laskavy@pc759.cs.msu.su</email></para>
       </listitem>