diff --git a/docs/conf.py b/docs/conf.py
index 3d10930..dbf962d 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -2,4 +2,4 @@
 # Custom sidebar templates, maps document names to template names.
 html_theme = 'alabaster'
 templates_path = ['_templates']
-html_sidebars = {'index': 'tidelift-sidebar.html'}
+html_sidebars = {'index': ['tidelift-sidebar.html']}