diff --git a/README.md b/README.md
index 8e58931..ec10abf 100644
--- a/README.md
+++ b/README.md
@@ -874,6 +874,8 @@ performance of any of your sites from across the globe.
:small_orange_diamond: CERN Data Centre - 3D visualizations of the CERN computing environments (and more).
:small_orange_diamond: How fucked is my database - evaluate how fucked your database is with this handy website.
:small_orange_diamond: Five Whys - you know what the problem is, but you cannot solve it?
+ :small_orange_diamond: howhttps.works - how HTTPS works ...in a comic!
+ :small_orange_diamond: howdns.works - a fun and colorful explanation of how DNS works.