diff --git a/archive.sh b/archive.sh
index 58c29fcc..1ea0a7a0 100755
--- a/archive.sh
+++ b/archive.sh
@@ -5,3 +5,6 @@ GPGHOMEDIR=$2
 
 git archive --format=tgz "$1" > cryfs-$1.tar.gz
 gpg --homedir "$GPGHOMEDIR" --armor --detach-sign cryfs-$1.tar.gz
+
+git archive --format=tar "$1" | xz -9 > cryfs-$1.tar.xz
+gpg --homedir "$GPGHOMEDIR" --armor --detach-sign cryfs-$1.tar.xz