In a meeting late on Tuesday, the European Union’s three major institutions agreed on how shipping’s greenhouse gases will be included in the bloc’s emissions trading system — EU ETS — from next year.

According to two sources with knowledge of the talks, negotiators from EU member states, the European Commission and the European Parliament confirmed the main parameters of the deal.

One key change from initial drafts is that emission monitoring and trading will be extended beyond CO2 to include methane and nitrous oxides as well.