diff --git a/dashboard/observablehq.config.js b/dashboard/observablehq.config.js
index 94ffd25..69889a6 100644
--- a/dashboard/observablehq.config.js
+++ b/dashboard/observablehq.config.js
@@ -15,6 +15,7 @@ export default {
     { name: "SBOM", path: "/sbom" },
     {
       name: "Reference",
+      collapsible: true,
       pages: [
         { name: "Live Data", path: "/docs/live-data" },
         { name: "Workstreams", path: "/docs/workstreams" },