diff --git a/docs/index.rst b/docs/index.rst
index 3a9017452a008191bc253df73cba6a36d6a6c7da..c6a56eca09e853744a0856525ee77d67880d9b16 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -102,7 +102,7 @@ Contents
 ========
 
 .. toctree::
-   :maxdepth: 2
+   :maxdepth: 6
 
    License <license>
    Authors <authors>