Has anyone been able to do meteor yarn add bcrypt?

I’ve been using yarn (installed with meteor so I can do meteor yarn), and it seems like running meteor npm install --save bcrypt will try to re-download all my packages. But meteor yarn add bcrypt downloads bcrypt but doesn’t seem not register with the meteor build system because I still see:

Note: you are using a pure-JavaScript implementation of bcrypt.
While this implementation will work correctly, it is known to be
approximately three times slower than the native implementation.
 In order to use the native implementation instead, run

meteor npm install --save bcrypt

in the root directory of your application.

I had this issue come up when I upgraded from 1.5.2 -> 1.6 recently. Uninstall and install worked fine for me, but ymmv.