diff --git a/README.md b/README.md
index 23285bd9c..308bf6c2a 100644
--- a/README.md
+++ b/README.md
@@ -53,7 +53,7 @@ The Vega editor supports [React Developer Tools](https://github.com/facebook/rea
 
 ## Building preview images
 
-Build images with `yarn generate-example-images`.
+Build images with `npm run generate-example-images`.
 
 ## Contributing guidelines