diff --git a/README.md b/README.md
index 2fc26da..36d36ba 100644
--- a/README.md
+++ b/README.md
@@ -261,9 +261,7 @@ The following is a detailed table of contents for Understanding Astro.
-## Chapter 5: Oh my React! (React documentation site clone)
-
-TBD ...
+## [Chapter 5: Oh my React! (React documentation site clone)](https://github.com/understanding-astro/understanding-astro-book/blob/master/ch5.md)