diff --git a/mktarball.sh b/mktarball.sh
new file mode 100755
index 00000000..adcc558a
--- /dev/null
+++ b/mktarball.sh
@@ -0,0 +1,15 @@
+#! /bin/bash
+
+YACVERSION=7.2.0
+
+if [ ! -f "yacreader-${YACVERSION}-src.tar.xz" ]
+then
+	echo "Building source tarball"
+	tar cfJ yacreader-${YACVERSION}-src.tar.xz --exclude='.*' --exclude 'dependencies' --exclude 'yacreader*tar*' *
+	md5sum yacreader-${YACVERSION}-src.tar.xz > yacreader-${YACVERSION}-src.tar.xz.md5sum
+else
+	echo "Updating source tarball"
+	rm yacreader-${YACVERSION}-src.tar* #delete old tarball, since tar can't update compressed archives
+	tar cfJ yacreader-${YACVERSION}-src.tar.xz --exclude='.*' --exclude 'dependencies' --exclude 'yacreader*tar*' *
+	md5sum yacreader-${YACVERSION}-src.tar.xz > yacreader-${YACVERSION}-src.tar.xz.md5sum
+fi