diff --git a/README.md b/README.md
index 33acea6..0f304c2 100644
--- a/README.md
+++ b/README.md
@@ -5,8 +5,9 @@
 ## Hacking
 
 ```
-$ python3 -m venv .venv && source .venv/bin/activate
-$ FLASK_APP=library
+$ python3 -m venv .venv
+$ source .venv/bin/activate
+$ pip install -r requirements.txt
 ```
 
 Or run `make setup`.