LOS ANGELES — Union leaders and Hollywood studios reached a tentative agreement Sunday to end a historic screenwriters strike after nearly five months, though no deal is yet in the works for striking actors.

The Writers Guild of America announced the deal with the Alliance of Motion Picture and Television Producers, the group that represents studios, streaming services and producers in negotiations.

“WGA has reached a tentative agreement with the AMPTP,” said in an email to members. “This was made possible by the enduring solidarity of WGA members and extraordinary support of our union siblings who joined us on the picket lines for over 146 days.”

The three-year contract agreement — settled on after five marathon days of renewed talks by negotiators WGA and the AMPTP — must be approved by the guild’s board and members before the strike officially ends.