diff --git a/docs/source/conf.py b/docs/source/conf.py
index a9ac8be72e7ac23cc2a373d24613e55db03fbf05..6da67458279d78de67ed34c2a8f2455f9cac31b3 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -162,7 +162,7 @@ html_theme_options = {
     'css_minify': True,
     'nav_title': 'pyMOR Documentation',
     'logo_icon': '&#xe869',
-    'globaltoc_depth': 2,
+    'globaltoc_depth': 5,
     'theme_color': '58c9f5',
     'color_primary': 'light-blue',
     'color_accent': 'blue',