Ronnie Dunn may now be Nashville's biggest free agent. The singer revealed on his Facebook page that his relationship with his longtime record label had come to an end. "Deal with Sony is over. Next chapter. Moving on, RD," a late night Thursday post reads.

The news comes exactly one year after Dunn released his self-titled debut solo album on Arista, a subsidiary of Sony and the label he and longtime duet partner Kix Brooks recorded under for 20 years. While 'Ronnie Dunn' was well-received critically, it failed to land a Top 10 hit, with the lead single 'Bleed Red' peaking at No. 10.

Two follow up singles -- 'Cost of Livin'' and 'Let the Cowboy Rock' -- landed at No. 19 and No. 31, respectively. Followers of Dunn on Facebook where aware of some discontent between the legendary singer and his label, although it's not clear if that's what ultimately led to the breakup. 'Ronnie Dunn' has sold about 200K copies since it's release.

Last month, Dunn revealed that an expanded version of the album would be available through Cracker Barrel, benefiting the Wounded Warrior Project. "More than ever before, I feel as though this album gave me a chance to tell my own story through songs that mean a lot to me," Dunn said, according to Billboard. 'I Love My Country' and 'Keep on Lovin' You' are the two bonus cuts on the album, which is available at the Cracker Barrel website.

Dunn becomes the latest superstar to leave the label that birthed his career. In 2011, Alan Jackson departed from Arista after 20 years and last year Tim McGraw split with Curb. Earlier this month Kenny Chesney announced he'd re-signed with Sony Nashville.