diff --git a/src/index.html b/src/index.html
index 2832111..2a79505 100644
--- a/src/index.html
+++ b/src/index.html
@@ -18,6 +18,7 @@ documentation:
   - title: "Read Some Nice Docs"
 documentation_list:
   - image_path: /assets/images/overview.jpg
+    image_caption: "Image courtesy of [Unsplash](https://unsplash.com/)"
     alt: "overview"
     title: "Overview"
     excerpt: "A one-page summary explains the unique properties of this system."