diff --git a/releng/makerel.sh b/releng/makerel.sh
index 23f3aaa9ee..d43c068962 100755
--- a/releng/makerel.sh
+++ b/releng/makerel.sh
@@ -16,8 +16,8 @@ export SVNURL=svn://openmetaverse.org/opensim/trunk
 ./dobuild.sh $SVNURL
 ./createreldir.sh
 
-tar cvf opensim-$OPENSIMMAJOR.$OPENSIMMINOR-$BRANCH.tar opensim-$OPENSIMMAJOR.$OPENSIMMINOR/*
-gzip opensim-$OPENSIMMAJOR.$OPENSIMMINOR-$BRANCH.tar
+tar cvf opensim-$OPENSIMMAJOR.$OPENSIMMINOR-`date +%s`-$BRANCH.tar opensim-$OPENSIMMAJOR.$OPENSIMMINOR/*
+gzip opensim-$OPENSIMMAJOR.$OPENSIMMINOR-`date +%s`-$BRANCH.tar
 
 echo "Produced binary tarball ready for distribution."