diff --git a/data-import.Rmd b/data-import.Rmd
index 1f8d8fc..a7bfe0a 100644
--- a/data-import.Rmd
+++ b/data-import.Rmd
@@ -641,7 +641,7 @@ There are two alternatives:
     ```
 
 Feather tends to be faster than RDS and is usable outside of R.
-RDS supports list-columns (which you'll learn about in <!--# TO DO: Link to to-be-added list columns chapter. -->); feather currently does not.
+RDS supports list-columns (which you'll learn about in Chapter \@ref(list-columns); feather currently does not.
 
 ```{r, include = FALSE}
 file.remove("challenge-2.csv")