New Zealand and France will work together in a bid to stop the spread of terrorism and extremism online.
Prime Minister Jacinda Ardern and French President Emmanuel Macron will co-chair a meeting in Paris in May to bring together technology companies and governments from around the world.
The move comes in the wake of the March 15 terrorist attack in Christchurch in which 50 people were killed.
The meeting aims to see world leaders and CEOs of tech companies agree to a pledge called the "Christchurch Call" to eliminate terrorist and violent extremist content online.
The meeting will be held alongside the Tech for Humanity meeting of G7 Digital Ministers, of which France is the Chair, and France’s separate Tech for Good summit, both on 15 May.
"The March 15 terrorist attacks saw social media used in an unprecedented way as a tool to promote an act of terrorism and hate," Ms Ardern said in a statement.
"We are asking for a show of leadership to ensure social media cannot be used again the way it was in the March 15 terrorist attack.
"We’re calling on the leaders of tech companies to join with us and help achieve our goal of eliminating violent extremism online at the Christchurch Summit in Paris."