diff --git a/README.md b/README.md
index 2c8773f..3a47b2c 100644
--- a/README.md
+++ b/README.md
@@ -166,6 +166,7 @@ A curated list of awesome mathematics resources.
 * [Proofs and Concepts: the fundamentals of abstract mathematics](http://people.uleth.ca/~dave.morris/books/proofs+concepts.html) - Joy Morris, Dave Morris
 * [Mathematical Reasoning: Writing and Proof](https://www.tedsundstrom.com/mathreasoning) - Ted Sundstrom
 * [Logic and Proof](http://leanprover.github.io/logic_and_proof/) -  Jeremy Avigad, Robert Y. Lewis, and Floris van Doorn
+* [QED - an interactive textbook](https://teorth.github.io/QED) - Terence Tao
 
 ### Category Theory