diff --git a/README.md b/README.md
index 3a47b2c..eca58bc 100644
--- a/README.md
+++ b/README.md
@@ -181,6 +181,7 @@ A curated list of awesome mathematics resources.
 * [Basic Concepts of Enriched Category Theory](http://www.tac.mta.ca/tac/reprints/articles/10/tr10abs.html) - G. M. Kelley
 * [Abstract and Concrete Categories: The Joy of Cats](http://www.tac.mta.ca/tac/reprints/articles/17/tr17abs.html) - Jiri Adamek, Horst Herrlich, George Strecker
 * [Seven Sketches in Compositionality: An Invitation to Applied Category Theory](http://math.mit.edu/~dspivak/teaching/sp18/7Sketches.pdf) - Brendan Fong and David I. Spivak (MIT)
+* [Category Theory in Context](http://www.math.jhu.edu/~eriehl/context/) - Emily Riehl (John Hopkins University)  
 
 ### Type Theory
 * [Proofs and Types](http://www.paultaylor.eu/stable/prot.pdf) - Jean-Yves Girard