diff --git a/docs/Xen.xml b/docs/Xen.xml
index 134307650..ec6213a04 100644
--- a/docs/Xen.xml
+++ b/docs/Xen.xml
@@ -15,7 +15,7 @@
       </author>
     </authorgroup>
 
-    <pubdate>2006-03-10</pubdate>
+    <pubdate>2006-04-15</pubdate>
 
     <copyright>
       <year>2006</year>
@@ -34,6 +34,12 @@
     </legalnotice>
   </articleinfo>
 
+  <caution>
+    <para>This article applies to Shorewall 3.0 and later. If you are running
+    a version of Shorewall earlier than Shorewall 3.0.0 then please see the
+    documentation for that release.</para>
+  </caution>
+
   <section>
     <title>Xen Network Environment</title>