Country star Miranda Lambert has announced via Twitter that she will be parting ways with her longtime label, Sony Nashville.

"Since I was 19... Sony has been my home in Nashville," tweeted Lambert, who didn't specify what her new label home would be. "Over the last 20 years together, we have released albums that allowed me to share my story with the world, and we've reached heights I'd never even dreamed were possible. I'm so thankful for our time together and everything they made possible for me, yet I wouldn't be true to myself if I wasn't constantly looking for the next challenge and a new way to stretch my creativity. With that in mind, I've decided to say goodbye to my Sony family. I can't wait to see what the next adventure holds."