diff --git a/README.md b/README.md
index 0f16ce0..0a55af2 100644
--- a/README.md
+++ b/README.md
@@ -2,4 +2,8 @@ This repository contains all the code and data for the results in this manuscrip
 
 Zachary A. King, Edward J. O'Brien, Adam M. Feist, Bernhard O. Palsson. Literature mining supports a next-generation modeling approach to predict cellular byproduct secretion. bioRxiv 066944; doi: https://dx.doi.org/10.1101/066944
 
-Currently, two dependencies for the code are not public. These are the Python packages `minime` and `ecolime`. When these are release, I will update `hindsight` with details on running them.
+Currently, two dependencies for the code are not public. These are the Python packages `minime` and `ecolime`. When these are released, I will update `hindsight` with details on running them.
+
+The `theseus` package is required. You can find it here:
+
+https://github.com/zakandrewking/theseus