Cannot find the library in Gradle

[njt28]

hi,

Thanks for your awesome library.
But I have problems with integrate the lib into my app.
I tried to put this line
compile 'jp.wasabeef:picasso-transformations:2.1.0'

but nothing is downloaded. Can you give me some helps?
Thanks

[Roc Boronat]

It works as expected...

One question: are you adding the jcenter() repo to your repositories?