Meteor package use private NPM package

Question

I have written a private general purpose NPM package. Now I'm writing a meteor package because I need to access mongo collections for example. I also need to access my private NPM package.

So I created a blank meteor package:

meteor create my-package --package

and then added my NPM package:

// package.js

...
Npm.depends({
  '@myorg/my-package': '1.0.0'
});
...

Whenever I try to add this package to my actual app, it gives me the following:

error: there is no npm package named '@myorg/my-package' in the npm registry

I already tried to put an .npmrc file with a valid access-token into the package directory but it didn't seem to work. Also, when I run npm whoami, it shows my username so I'm actually logged in and can, theoretically speaking, access my package.

Does anyone have an idea how to fix this?

EDIT:
I now opened an issue for meteor: #10102