diff --git a/README.md b/README.md
index b8d5baed..7b9b4d95 100644
--- a/README.md
+++ b/README.md
@@ -7,13 +7,11 @@
 
     script/setup
 
-The setup script will create a new Python virtual environment for the application to use. All of the scripts will activate this virutal envirnment automatically, but you can also manually activate it like this:
+The setup script installs pipenv, which is what this application uses to manage its dependences and virtualenv. Instead of the classic `requirements.txt` file, pipenv uses a Pipfile and Pipfile.lock, making it more similar to other modern package managers like yarn or mix.
 
-    source .venv/bin/activate
+To enter the virtualenv manually (a la `source .venv/bin/activate`):
 
-When you are done, type
-
-    deactivate
+    pipenv shell
 
 If you want to automatically load the virtual environment whenever you enter the project directory, take a look at [direnv](https://direnv.net/).  An `.envrc` file is included in this repository.  direnv will activate and deactivate virtualenvs for you when you enter and leave the directory.