Britain and France are set to sign a joint declaration on Monday to step up efforts to stop illegal migrants from making dangerous travel across the English Channel.

According to a media invitation issued by the French Interior Ministry, French Interior Minister Gerald Darmanin will meet British Home Secretary Suella Braverman in Paris early Monday to sign the agreement. A French official confirmed a deal would be reached on Monday but declined to provide further details.

About 40,000 people have crossed the Channel in small boats so far this year, up from 28,526 last year, putting pressure on UK’s new Prime Minister, Rishi Sunak, to find ways to slow the flow.

The British-French deal will significantly increase the number of 200 French officials and volunteers on Channel beaches, the Telegraph reported on Saturday, while France aims to prevent a “higher” percentage of migrants from leaving.

France will also agree to build a joint control centre where British immigration officials will be based, while London will pay Paris around £60 million ($71 million) to help resolve the issue, The Telegraph said.

British Foreign Secretary James Cleverley and French Foreign Secretary Catherine Colonna stated on Friday stressing the “urgency of addressing the problem of illegal immigration in all its forms”.