NEW YORK — A memoir Alexei Navalny began working on in 2020 will be published this fall. “Patriot,” which publisher Alfred A. Knopf is calling the late Russian opposition leader's “final letter to the world,” will come out Oct. 22.

Navalny’s widow, Yulia Navalnaya, said in a statement released Thursday by the publisher, “This book is a testament not only to Alexei’s life, but to his unwavering commitment to the fight against dictatorship—a fight he gave everything for, including his life. Through its pages, readers will come to know the man I loved deeply—a man of profound integrity and unyielding courage. Sharing his story will not only honor his memory but also inspire others to stand up for what is right and to never lose sight of the values that truly matter.”

Navalny, 47, died in February while serving a 19-year prison sentence on extremism charges that he condemned as politically motivated. He was jailed after returning from Germany in January 2021, and died in a remote penal colony above the Arctic Circle.

According to Knopf, Navalny began working on the book in Germany, and continued writing it in Russia, both in and out of prison.

“In vivid, page-turning detail, including never-before-seen correspondence from prison, Navalny recounts, among other things, his political career, the many attempts on his life, and the lives of the people closest to him, and the relentless campaign he and his team waged against an increasingly dictatorial regime,” Knopf's announcement reads in part.

“Written with the passion, wit, candor, and bravery for which he was justly acclaimed, ‘Patriot’ is Navalny’s final letter to the world: a moving account of his last years spent in the most brutal prison on earth; a reminder of why the principles of individual freedom matter so deeply; and a rousing call to continue the work for which he sacrificed his life.”