diff --git a/README.md b/README.md
index 24868d4..4a7512b 100644
--- a/README.md
+++ b/README.md
@@ -4,10 +4,11 @@ This project was generated with [Angular CLI](https://github.com/angular/angular
 
 ## Building libraries
 
-Run `npm run build:library` to build dependency library.
+Run `yarn build:library` to build dependency library.
 
 ## Development server
 
+Run `yarn build:watch:library` in new terminal for watching to build libraries.
 Run `ng serve` for a dev server. Navigate to `http://localhost:4200/`. The app will automatically reload if you change any of the source files.
 
 ## Code scaffolding