PITTSBURGH (AP) — The union that represents a Pittsburgh newspaper’s truck drivers, one of five unions that have been on strike for 18 months, has approved a new contract with the paper’s owners. Four other unions, including one representing the Pittsburgh Post-Gazette’s journalists and other newsroom employees, have not settled.

The Pittsburgh Post-Gazette said the remaining members of Teamsters Local 211/205 voted unanimously to accept a labor dispute settlement agreement and dissolve their union at the newspaper. Details of the agreement were not disclosed, but the newspaper reported that it substantially resolves all strike-related issues and health care, including any outstanding National Labor Relations Board actions.

The newspaper declined further comment on the matter.

Four other unions at the Post-Gazette — including the Newspaper Guild of Pittsburgh, which represents reporters, photographers and other newsroom employees — are not part of the settlement and remain on strike. The Communications Workers of America represents the other Post-Gazette workers still on strike, including the mailers, advertising staff, and the journalists at the Pittsburgh Newspaper Guild.