Liberal MP and climate activist Steven Guilbeault says he plans to resign as a member of parliament later this summer.

In a statement posted to social media, the Montreal-area MP said he will remain part of the Liberal caucus until his resignation officially takes effect.

Guilbeault says the decision came after “careful consideration.”

“After almost seven years as a member of parliament and minister, I have come to the conclusion that it is time for me to pursue my fight for environmental protection and the fight against climate change in a different way,” he wrote.

He also thanked the residents of Laurier–Sainte-Marie for electing him during the last three federal elections.

“Serving my community has been one of the greatest privileges of my life,” the statement said.

Guilbeault stepped away from Prime Minister Mark Carney’s cabinet last November following the government’s agreement with Alberta Premier Danielle Smith to support the construction of a new oil pipeline.

Reports indicate Guilbeault had concerns with both the pipeline agreement and the federal government’s broader environmental policy direction.

Once his resignation takes effect, the Liberals will hold 173 seats in the House of Commons — just one above the 172 needed for a majority government.

Carney wishes Guilbeault well

Prime Minister Mark Carney said he wishes Guilbeault “all the best” following the announcement.

Speaking to reporters earlier in the day, Carney said he understands that “things change” over the course of people’s careers.

“It’s for him to make decisions about his career in the next stage of the career,” Carney said.

Carney also thanked Guilbeault for his work both as an MP and as part of the Liberal team, saying the two had worked closely together on climate issues in recent years.