diff --git a/attach_modules.sh b/attach_modules.sh
new file mode 100755
index 0000000..e6d8c98
--- /dev/null
+++ b/attach_modules.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+git submodule foreach -q --recursive 'echo "Updating $name"; git checkout $(git config -f $toplevel/.gitmodules submodule.$name.branch || echo master)'