diff --git a/README.md b/README.md
index 30c2866..e90a753 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@ An [experimental Mastodon client](https://n1k0.github.io/tooty/) written in Elm.
 ### Setting up the development environment
 
     $ npm i
+    $ ./node_modules/elm-package install
 
 ### Starting the dev server