diff --git a/docs/index.rst b/docs/index.rst
index e7f4dffe..6779a860 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -18,13 +18,14 @@ Docs
 ----
 
 .. toctree::
-   :maxdepth: 1
+   :maxdepth: 2
 
    docs/installation
    docs/features
    docs/repl
    docs/recipes
    docs/plugin-api
+   docs/plugin-api-classes
    docs/settings
    docs/history
    docs/development