This amendment would cost the government over Rs.5,000 crore additionally.
The second amendment gives the states 360 days, in place of 180 earlier, as preparatory period before it starts implementing the bill.
The third amendment stipulates that ready-to-eat meals will not be provided to the children in schools under the schemes being run by the central government.
Instead, they would be given hot cooked meal which would be more nutritious, said the sources.
This change has been done after the social activists said that multi-national companies would benefit if ready-to-eat meals were given to school children.
The fourth amendment allows the state governments to set up grievance redressal commissions.
The Food Security Bill is Congress chief Sonia Gandhi's pet welfare legislation.
The bill will cost the government around Rs.124,723 crore and will entail an additional burden of only Rs.23,800 crore.
