diff --git a/README.md b/README.md
index a3592e6..9a7ce8b 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ Elm app.
 
 # Building
 ```bash
-nix-shell -p elmPackages.elm cargo uglify-js
+nix-shell
 make serve RELEASE=1 # can also do DEBUG=1 instead
 ```