diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..189174e
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "etl-tooling"]
+	path = etl-tooling
+	url = git@github.com:CWTSLeiden/CWTS-ETL-tooling.git
diff --git a/etl-tooling b/etl-tooling
new file mode 160000
index 0000000..11e7eb7
--- /dev/null
+++ b/etl-tooling
@@ -0,0 +1 @@
+Subproject commit 11e7eb7421225cb73971f862e890736c50b4b9d7