diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..36a0230
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "libjade"]
+	path = libjade
+	url = https://github.com/formosa-crypto/libjade.git
diff --git a/libjade b/libjade
new file mode 160000
index 0000000..b094006
--- /dev/null
+++ b/libjade
@@ -0,0 +1 @@
+Subproject commit b0940068243f01dc3c185d166f1450936eec3eed