diff --git a/en_US.ISO8859-1/articles/contributors/contrib.additional.xml b/en_US.ISO8859-1/articles/contributors/contrib.additional.xml
index 1b1647c22c..589936dab1 100644
--- a/en_US.ISO8859-1/articles/contributors/contrib.additional.xml
+++ b/en_US.ISO8859-1/articles/contributors/contrib.additional.xml
@@ -4006,6 +4006,11 @@
       <email>hendrik@scholz.net</email></para>
   </listitem>
 
+  <listitem>
+    <para>Henning Matyschok
+      <email>henning.matyschok@outlook.com</email></para>
+  </listitem>
+
   <listitem>
     <para>Henri Michelon
       <email>michelon@e-cml.org</email></para>