diff --git a/book/bookinfo.xml b/book/bookinfo.xml
index dcf21c4d95..b83196540a 100644
--- a/book/bookinfo.xml
+++ b/book/bookinfo.xml
@@ -47,6 +47,12 @@
       <revremark>Ongoing Release</revremark>
     </revision>
 
+    <revision>
+      <revnumber>7.9</revnumber>
+      <date>2015-03-08</date>
+      <revremark>Thirteenth release</revremark>
+    </revision>
+
     <revision>
       <revnumber>7.8</revnumber>
       <date>2015-10-01</date>