diff --git a/Documentation.html b/Documentation.html
index 834215c2d..d376f7358 100644
--- a/Documentation.html
+++ b/Documentation.html
@@ -82,6 +82,9 @@ vim: expandtab ts=4 sw=4 sts=4 tw=78
To support BLOB streaming, see PHP and MySQL requirements
in
FAQ 6.25.
+ To support XML and Open Document Spreadsheet importing,
+ you need PHP 5.2.17 or newer and the
+ libxml extension.
MySQL 5.0 or newer (details);