diff --git a/README.md b/README.md
index a814bf4..bc7b6a3 100644
--- a/README.md
+++ b/README.md
@@ -696,6 +696,7 @@ Write code on a whiteboard or paper, not a computer. Test with some sample input
         - [ ] [Bithacks](https://graphics.stanford.edu/~seander/bithacks.html)
         - [ ] [The Bit Twiddler](https://bits.stephan-brumme.com/)
         - [ ] [The Bit Twiddler Interactive](https://bits.stephan-brumme.com/interactive.html)
+        - [ ] [Bit Hacks (video)](https://www.youtube.com/watch?v=ZusiKXcz_ac)
     - [ ] 2s and 1s complement
         - [Binary: Plusses & Minuses (Why We Use Two's Complement) (video)](https://www.youtube.com/watch?v=lKTsv6iVxV4)
         - [1s Complement](https://en.wikipedia.org/wiki/Ones%27_complement)