diff --git a/readme.md b/readme.md
index a30e446..f1e4372 100644
--- a/readme.md
+++ b/readme.md
@@ -49,6 +49,8 @@ Directory structure little differs from a standard Laravel tree. We decided to r
 
       dcr node npm run dev
 
+- place google credentials here: `/storage/app/google-calendar/service-account-credentials.json` ([how to obtain the credentials](https://github.com/spatie/laravel-google-calendar#how-to-obtain-the-credentials-to-communicate-with-google-calendar))
+
 ### Available containers (local)
 
 - **web** - nginx HTTP server