diff --git a/.gitmodules b/.gitmodules
index f17fe53cfdfde96598907b4e906f49258f2a9a8f..a83e793ed130c428ed818e68bc9ba1c50e05af7b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -43,3 +43,6 @@
 [submodule "ThirdParty/container-maker"]
 	path = ThirdParty/container-maker
 	url = https://github.com/ufz/ogs-container-maker.git
+[submodule "ThirdParty/ogs6py"]
+	path = ThirdParty/ogs6py
+	url = https://github.com/joergbuchwald/ogs6py.git
diff --git a/ThirdParty/ogs6py b/ThirdParty/ogs6py
new file mode 160000
index 0000000000000000000000000000000000000000..51afd2cec3678d66a00dd2e8436c9ba1d3335e3b
--- /dev/null
+++ b/ThirdParty/ogs6py
@@ -0,0 +1 @@
+Subproject commit 51afd2cec3678d66a00dd2e8436c9ba1d3335e3b