diff --git a/README.md b/README.md
index 9597777..22a4f7f 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ in ...
 ```
 
 ```nix
-bp.buildNpmPackage { src = ./.; }
+bp.buildNpmPackage { src = ./.; npmBuild = "npm run build"; }
 ```
 
 ```nix