Document minimum required version of DocBook XSL stylesheets

diff --git a/doc/src/sgml/docguide.sgml b/doc/src/sgml/docguide.sgml
index 7bbe3246e74adab9efe7afec959a47eb3bf87c23..6ffa85f3be6f5c31e5f44d6645043e6108398661 100644 (file)
--- a/doc/src/sgml/docguide.sgml
+++ b/doc/src/sgml/docguide.sgml
@@ -126,6 +126,10 @@
        produce HTML or PDF output, but official PostgreSQL releases
        use the DSSSL stylesheets for that.
       </para>
+
+      <para>
+       The minimum required version is currently 1.74.0.
+      </para>
      </listitem>
     </varlistentry>