diff --git a/en_US.ISO8859-1/articles/contributors/contrib.additional.sgml b/en_US.ISO8859-1/articles/contributors/contrib.additional.sgml
index 0166f1993f..f619928ba5 100644
--- a/en_US.ISO8859-1/articles/contributors/contrib.additional.sgml
+++ b/en_US.ISO8859-1/articles/contributors/contrib.additional.sgml
@@ -5936,6 +5936,11 @@
 	<email>loos.br@gmail.com</email></para>
     </listitem>
 
+    <listitem>
+      <para>Lukasz Stelmach
+	<email>lukasz.stelmach@iem.pw.edu.pl</email></para>
+    </listitem>
+
     <listitem>
       <para>Lupe Christoph
 	<email>lupe@lupe-christoph.de</email></para>