diff --git a/reference/datetime/timezones.xml b/reference/datetime/timezones.xml
index 48e39d2ebb..4c40f0a9ed 100644
--- a/reference/datetime/timezones.xml
+++ b/reference/datetime/timezones.xml
@@ -8,7 +8,7 @@
 
  <note>
   <simpara>
-   &date.timezone.dbversion; 2009.12.
+   &date.timezone.dbversion; 2009.13.
   </simpara>
  </note>