diff --git a/docs/source/toc.segment b/docs/source/toc.segment
index 5c04618..a4c6e22 100644
--- a/docs/source/toc.segment
+++ b/docs/source/toc.segment
@@ -27,6 +27,7 @@
 ./notebooks/extraction/intro
 ./notebooks/extraction/email
 ./notebooks/extraction/chat_extraction
+./notebooks/extraction/high_cardinality
 ```
 
 ```{toctree}