diff --git a/README.md b/README.md
index 8e77d903..45a9de95 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@
     pip install --upgrade pip
     pip install -r requirements.txt
     npm install
-    ./gen-css
+    gem install sass
 
 ## Running (development)