diff --git a/README.md b/README.md
index 5ef0445..4e11033 100644
--- a/README.md
+++ b/README.md
@@ -133,6 +133,7 @@ To run as a standalone application, we need to compile the python application to
 To build a `.dmg` containing a `.app` for Mac, run the following:
 
 ```
+pip install -r requirements.txt
 npm install
 npm run dist
 ```