'The weight of the car, without fuel, must not be less than 691kg at all times during the Event', read an FIA statement.
'The weight limit has increased by 1kg to take into account the difference in weight between the tyres in 2013 and 2014.'
The statement also confirmed that at a meeting of F1's strategy group on Wednesday, FIA president Jean Todt, Bernie Ecclestone and representatives from Formula 1 teams agreed unanimously to a cost control regulations.
Those proposals will be presented to the WMSC in June before their implementation in January 2015.
Other amendments to the 2014 regulations mean that the stewards may now impose a five second time penalty which can be taken before work is carried out on the car in a pit stop. Team personnel must also wear helmets during qualifying, as well as the race
Drivers are no longer permitted to stop on the slowing down lap to save fuel for sampling and subsequent analysis; this will not be considered justifiable reason for stopping.
Due to the new regulations each team is permitted six curfew 'jokers', compared to the previous two. This will allow greater flexibility for working on the new engines and cars and has been introduced for 2014 only.
The curfew prohibits team members from being in the paddock during specified hours.
The WMSC also announced new regulations for the 2015 season. The car minimum weight will be increased by 10kg, to 701kg, for 2015 while all tyre heating devices will be prohibited.
For safety reasons, the front part of the chassis will not be able to climb too steeply rearward of the front of the chassis.
In order to be recognised as a constructor, from 2015 teams will not need to design and manufacture suspension and brake ducts.
There was no reference to the controversial double points regulation, meaning that it remains for the 2014 season finale.