diff --git a/hugr-py/docs/api-docs/conf.py b/hugr-py/docs/api-docs/conf.py
index b98bc4e57..57c056a1a 100644
--- a/hugr-py/docs/api-docs/conf.py
+++ b/hugr-py/docs/api-docs/conf.py
@@ -27,6 +27,7 @@
         "image_light": "_static/Quantinuum_logo_black.png",
         "image_dark": "_static/Quantinuum_logo_white.png",
     },
+    "show_navbar_depth": 2,
 }
 
 html_static_path = ["../_static"]