diff --git a/.gitignore b/.gitignore
index b05d39886..fe147e8b4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,5 +30,6 @@ package/debian/katie-*.log
 package/debian/katie-*.substvars
 package/debian/katie-*/
 
-# tarballs from oldmake.sh
-scripts/cmake-*.tar.gz
\ No newline at end of file
+# tarballs from tarball.sh and oldmake.sh
+*.tar.xz
+scripts/cmake-*.tar.gz
diff --git a/scripts/tarball.sh b/scripts/tarball.sh
new file mode 100755
index 000000000..5d535d1a1
--- /dev/null
+++ b/scripts/tarball.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+set -e
+
+cwd="$(realpath $(dirname $0))"
+
+tarball="Katie-4.9.0-Source"
+
+git archive HEAD --format=tar --prefix="$tarball/" | xz > "$cwd/../$tarball.tar.xz"