The team announced the move after Sunday night's 2-1 loss to Detroit.
The right wing has 219 goals in 1,191 career NHL games with Florida, the New York Rangers, Edmonton, St. Louis, Atlanta and Dallas. The 36-year-old played in 73 games with the Stars last season, getting four goals and 17 assists.
Dvorak had a career-high 31 goals in 2000-01 with the Rangers and helped lead the Panthers to the 1996 Stanley Cup finals. He made another trip to the finals with the Oilers in 2006.
He spent this season with Davos of the Swiss league.