diff --git a/en_US.ISO8859-1/articles/contributors/contrib.additional.xml b/en_US.ISO8859-1/articles/contributors/contrib.additional.xml
index 9dca257013..f8e6479392 100644
--- a/en_US.ISO8859-1/articles/contributors/contrib.additional.xml
+++ b/en_US.ISO8859-1/articles/contributors/contrib.additional.xml
@@ -10407,6 +10407,11 @@
 	<email>tzhuan@gmail.com</email></para>
     </listitem>
 
+    <listitem>
+      <para>Tzanetos Balitsaris
+	<email>tzabal@it.teithe.gr</email></para>
+    </listitem>
+
     <listitem>
       <para>UMENO Takashi
 	<email>umeno@rr.iij4u.or.jp</email></para>