diff --git a/README.md b/README.md
index 666120a1a9..ba3c99e6e2 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,7 @@ environment), and Node has a library installer called
 Once you've got your languages and virtual environments set up, install
 the libraries like so:
 
+    $ pip install -r requirements/edx/pre.txt
     $ pip install -r requirements/edx/base.txt
     $ pip install -r requirements/edx/post.txt
     $ bundle install