diff --git a/build/master_ukfederation.xsl b/build/master_ukfederation.xsl
index cf6847cd..f674bf12 100644
--- a/build/master_ukfederation.xsl
+++ b/build/master_ukfederation.xsl
@@ -21,27 +21,22 @@
 	xmlns:wayf="http://sdss.ac.uk/2006/06/WAYF"
 	xmlns:uklabel="http://ukfederation.org.uk/2006/11/label"
 	xmlns:members="http://ukfederation.org.uk/2007/01/members"
+	xmlns:date="http://exslt.org/dates-and-times"
 	xmlns="urn:oasis:names:tc:SAML:2.0:metadata"
 	exclude-result-prefixes="wayf members">
 
-	<!--
-		Version information for this file.  Remember to peel off the dollar signs
-		before dropping the text into another versioned file.
-	-->
-	<xsl:param name="cvsId">$Id$</xsl:param>
+	<xsl:variable name="now" select="date:date-time()"/>
 
 	<!--
 		Add a comment to the start of the output file.
 	-->
 	<xsl:template match="/">
-		<xsl:comment>
-			<xsl:text>&#10;&#9;***DO NOT EDIT THIS FILE***&#10;&#10;</xsl:text>
-			<xsl:text>&#9;Generated by:&#10;&#10;&#9;</xsl:text>
-			<xsl:value-of select="substring-before(substring-after($cvsId, ': '), '$')"/>
-			<xsl:text>&#10;</xsl:text>
-		</xsl:comment>
 		<xsl:comment>
 			<xsl:text>&#10;&#9;U K   F E D E R A T I O N   M E T A D A T A&#10;</xsl:text>
+			<xsl:text>&#10;</xsl:text>
+			<xsl:text>&#9;Aggregate built </xsl:text>
+			<xsl:value-of select="$now"/>
+			<xsl:text>&#10;</xsl:text>
 		</xsl:comment>
 	    <xsl:apply-templates/>
 	</xsl:template>