Canadian Prime Minister Justin Trudeau announced Sunday that his government will offer a formal apology for its past discrimination against LGBTQ citizens. Trudeau will apologize “for the persecution & injustices [LGBTQ people] have suffered” at the House of Commons next week, according to a tweet from him and an invitation to the event obtained by the Canadian outlet The Globe and Mail. The address is “expected to be the most comprehensive ever offered by any national government for past persecution of sexual minorities,” the outlet wrote.

On November 28, the Government will offer a formal apology to LGBTQ2 Canadians in the House - for the persecution & injustices they have suffered, and to advance together on the path to equality & inclusion. — Justin Trudeau (@JustinTrudeau) November 19, 2017

Trudeau’s address will likely focus largely on Canada’s past treatment of LGBTQ service members and other government employees. From the 1950s until 1992, many of those the government suspected of being gay were interrogated, put through humiliating tests to expose their sexual orientation and expelled from their Canadian government positions. The forthcoming apology is one of several redresses recommended by the Canadian LGBTQ advocacy group Egale, which has been working with Trudeau’s administration to address sexual minority equality issues in Canada.

Geoff Robins/AFP/Getty Images Prime Minister Justin Trudeau waves to the crowd as he marches in the Pride Parade in Toronto in June.