diff --git a/.gitmodules b/.gitmodules
index e69de29..b11a888 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "csaf-validator-lib/csaf"]
+	path = csaf-validator-lib/csaf
+	url = https://github.com/oasis-tcs/csaf.git
\ No newline at end of file