diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..b8c29f21b
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "lib/ogslib"]
+	path = lib/ogslib
+	url = https://github.com/open5gs/ogslib
diff --git a/lib/ogslib b/lib/ogslib
new file mode 160000
index 000000000..0dbf93603
--- /dev/null
+++ b/lib/ogslib
@@ -0,0 +1 @@
+Subproject commit 0dbf93603234b5f2a7a9df1cc8dc7d54d7f889d7