diff --git a/README.md b/README.md
index 1a042f00..6fe3b065 100644
--- a/README.md
+++ b/README.md
@@ -465,3 +465,4 @@ the full [playlist] is on youtube
 1. [javascript sucks at unicode (intermediate)](https://youtu.be/PTJAvcpBdWo?list=PLWBKAf81pmOaP9naRiNAqug6EBnkPakvY)
 1. [pip freezing (==) isn't safe (intermediate)](https://youtu.be/oGpyupM52IQ?list=PLWBKAf81pmOaP9naRiNAqug6EBnkPakvY)
 1. [python regex dynamic replacements (intermediate)](https://youtu.be/o_PD7AAbs4U?list=PLWBKAf81pmOaP9naRiNAqug6EBnkPakvY)
+1. [how I made my import sorter 7x faster (intermediate)](https://youtu.be/Q3menOSxRC4?list=PLWBKAf81pmOaP9naRiNAqug6EBnkPakvY)