diff --git a/source/conf.py b/source/conf.py
index 5acfd6e..c28918e 100644
--- a/source/conf.py
+++ b/source/conf.py
@@ -34,7 +34,7 @@ html_css_files = [
     'css/custom.css',
 ]
 html_theme_options = {
-    'collapse_navigation': False,
+    'collapse_navigation': True,
     'sticky_navigation': True,
     'navigation_depth': -1,
     'includehidden': True,