diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..84a76bd
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "themes/hugo-tufte"]
+	path = themes/hugo-tufte
+	url = https://git.bajsicki.com/phil/hugo-tufte.git