diff --git a/update_subtrees.sh b/update_subtrees.sh
new file mode 100644
index 0000000..68a5be0
--- /dev/null
+++ b/update_subtrees.sh
@@ -0,0 +1 @@
+git subtree pull --prefix subtrees/columbus git@dominik-roth.eu:dodox/Columbus.git master --squash