diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..56b5b09
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "lib/css/fswiai-theme"]
+	path = lib/css/fswiai-theme
+	url = ssh://git@git.wiai.de:22222/fknoch/fswiai-revealjs-theme.git
diff --git a/lib/css/fswiai-theme b/lib/css/fswiai-theme
new file mode 160000
index 0000000..f59757d
--- /dev/null
+++ b/lib/css/fswiai-theme
@@ -0,0 +1 @@
+Subproject commit f59757dbdc7e44ad61bd8e9f0c1869d364d98258