diff --git a/mkdocs.yml b/mkdocs.yml
index f9980f0..9892913 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -32,13 +32,12 @@ plugins:
 markdown_extensions:
   - attr_list
   - admonition
-  - codehilite
   - footnotes
   - pymdownx.smartsymbols
   - pymdownx.superfences
   - toc:
       permalink: true
-      toc_depth: 3
+      toc_depth: 4
   - pymdownx.tabbed
   - pymdownx.highlight
   - pymdownx.details