diff --git a/.gitmodules b/.gitmodules
index 8b13789..a1524f2 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1 +1,4 @@
 
+[submodule "themes/docsy"]
+	path = themes/docsy
+	url = https://github.com/google/docsy
diff --git a/themes/docsy b/themes/docsy
new file mode 160000
index 0000000..3ca22ac
--- /dev/null
+++ b/themes/docsy
@@ -0,0 +1 @@
+Subproject commit 3ca22ac9a0b7e4b4faf54cd4f4ab272695f1516a