diff --git a/README.md b/README.md
index 6f2504f..0860b4c 100644
--- a/README.md
+++ b/README.md
@@ -337,6 +337,7 @@ Books
 ###Humor
 
 * [I Hope They Serve Beer In Hell](https://www.goodreads.com/book/show/9010.I_Hope_They_Serve_Beer_in_Hell) by Tucker Max
+* [Harry Potter and the Methods of Rationality](https://www.goodreads.com/book/show/10016013-harry-potter-and-the-methods-of-rationality) by Eliezer Yudkowsky
 
 ###Mystery