diff --git a/README.md b/README.md
index 274ace8..aa84073 100644
--- a/README.md
+++ b/README.md
@@ -576,3 +576,4 @@ the full [playlist] is on youtube
 1. [git: inline diffs with --word-diff! (intermediate)](https://youtu.be/Wn3bJUzvy5I)
 1. [ONE TERABYTE of RAM saved with a single line of code (advanced)](https://youtu.be/Hgw_RlCaIds)
 1. [using memray to debug (and fix) a memory leak in krb5! (advanced)](https://youtu.be/bw5AHdZA7e4)
+1. [py-spy saved our python 3.11 rollout (intermediate)](https://youtu.be/p8s2fzqA07s)