diff --git a/.cwl/cwl-aux b/.cwl/cwl-aux
new file mode 160000
index 0000000000000000000000000000000000000000..11931eaf85d05574e9a8c0aff32de00a6f3a46d7
--- /dev/null
+++ b/.cwl/cwl-aux
@@ -0,0 +1 @@
+Subproject commit 11931eaf85d05574e9a8c0aff32de00a6f3a46d7
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000000000000000000000000000000000..753c7c2cd0c6c96ee6530d7594151eecc8825f08
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule ".cwl/cwl-aux"]
+	path = .cwl/cwl-aux
+	url = https://git.nfdi4plants.org/brilator/cwl-aux.git