diff --git a/package.sh b/package.sh
new file mode 100755
index 0000000..f6a6d3d
--- /dev/null
+++ b/package.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+set -e
+
+rm -f out.xpi
+zip -r out.xpi src manifest.json