diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..ec2a248
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "themes/congo"]
+	path = themes/congo
+	url = git@git.chenla-agathos.com:marcel/congo.git
diff --git a/themes/congo b/themes/congo
new file mode 160000
index 0000000..5893b5d
--- /dev/null
+++ b/themes/congo
@@ -0,0 +1 @@
+Subproject commit 5893b5df1fc0a26f8b3a19a2bf0dd11fffa3b7d5