diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..aea3f3e
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "themes/nightfall"]
+	path = themes/nightfall
+	url = https://github.com/LordMathis/hugo-theme-nightfall