diff --git a/iteration.Rmd b/iteration.Rmd
index 6a981d7..9ad1f3f 100644
--- a/iteration.Rmd
+++ b/iteration.Rmd
@@ -1024,3 +1024,7 @@ x %>% accumulate(`+`)
     ```
 
     What causes the bugs?
+
+## Case study
+
+<!--# Case study on web scraping from multiple pages -->