diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..a3bd5a8
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "etl"]
+	path = etl
+	url = https://github.com/ETLCPP/etl.git
diff --git a/etl b/etl
new file mode 160000
index 0000000..dd060d5
--- /dev/null
+++ b/etl
@@ -0,0 +1 @@
+Subproject commit dd060d5013e1c35bb870b3535581e71e1e7413d5