Index: src/main/java/org/apache/maven/archiver/MavenArchiver.java
===================================================================
--- src/main/java/org/apache/maven/archiver/MavenArchiver.java	(revision 405986)
+++ src/main/java/org/apache/maven/archiver/MavenArchiver.java	(working copy)
@@ -28,6 +28,8 @@
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
+import java.text.SimpleDateFormat;
+import java.util.Date;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
@@ -254,6 +256,7 @@
             // ----------------------------------------------------------------------
 
             Properties p = new Properties();
+            SimpleDateFormat dateFormat = new SimpleDateFormat("MMM d yyyy");
 
             p.setProperty( "groupId", workingProject.getGroupId() );
 
@@ -261,6 +264,8 @@
 
             p.setProperty( "version", workingProject.getVersion() );
 
+            p.setProperty( "builtOn", dateFormat.format(new Date()));
+
             OutputStream os = new FileOutputStream( pomPropertiesFile );
 
             p.store( os, "Generated by Maven" );