diff --git a/.gitignore b/.gitignore
index 6cac6fc..d005c66 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
+jsr-305-0.4.20090319.tar.xz
+/jsr-305-20130910svn.tgz
 /jsr-305-3.0.2.tar.gz
diff --git a/generate-tarball.sh b/generate-tarball.sh
new file mode 100644
index 0000000..740a55f
--- /dev/null
+++ b/generate-tarball.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+set -e
+
+name=jsr-305
+version="$(sed -n 's/Version:\s*//p' *.spec)"
+
+rm -rf "${name}-${version}"
+
+git clone 'https://github.com/amaembo/jsr-305'
+pushd 'jsr-305'
+git checkout 'd7734b13c61492982784560ed5b4f4bd6cf9bb2c'
+popd
+
+mv 'jsr-305' "${name}-${version}"
+
+rm -f "${name}-${version}.tar.gz"
+tar -czf "${name}-${version}.tar.gz" "${name}-${version}"
+rm -rf "${name}-${version}"