diff --git a/doc/_templates/sidebar-nav-bs.html b/doc/_templates/sidebar-nav-bs.html
new file mode 100644
index 0000000000000..7e0043e771e72
--- /dev/null
+++ b/doc/_templates/sidebar-nav-bs.html
@@ -0,0 +1,9 @@
+<nav class="bd-links" id="bd-docs-nav" aria-label="Main navigation">
+  <div class="bd-toc-item active">
+    {% if pagename.startswith("reference") %}
+    {{ generate_nav_html("sidebar", maxdepth=4, collapse=True, includehidden=True, titles_only=True) }}
+    {% else %}
+    {{ generate_nav_html("sidebar", maxdepth=4, collapse=False, includehidden=True, titles_only=True) }}
+    {% endif %}
+  </div>
+</nav>