diff --git a/_toc.yml b/_toc.yml
index 41d42aab..f1c70bee 100644
--- a/_toc.yml
+++ b/_toc.yml
@@ -46,7 +46,7 @@ parts:
       - file: intermediate/xarray_ecosystem
       - file: intermediate/hvplot
       - file: intermediate/cmip6-cloud
-      - file: data_cleaning/data_cleaning.md
+      - file: data_cleaning/05_data_cleaning.md
         sections:
           - file: data_cleaning/05.1_intro.md
           - file: data_cleaning/05.2_examples.md