diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..d044502
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "rln/vendor/rln"]
+	path = rln/vendor/rln
+	ignore = dirty
+	url = https://github.com/Rate-Limiting-Nullifier/rln_circuits.git