Use Wrappers Around Libraries

ImageLoaderWrapper.kt

//Helper class which hides the library and exposes only required functionality
class ImageLoader {

    fun setImageFromUrl(url: String, imageView: SomeViewHolder) {
        // Do your Picasso or what ever library related stuff here
        Picasso.get().load(url).into(imageView)
    }
}

class SomeScreen {

    // Don't do this it binds the library with the code
    fun setImage(url: String) {
        Picasso.get().load(url).into(someImageView)
    }

    // Do use the wrapper and let it take care of updating stuff
    fun setImage(url: String) {
        imageLoaderInstance.setImageFromUrl(url, someImageView)
    }
}