Sri Lanka now believes 253 people died in the attacks, down from 359, blaming a calculation error.
Sri Lanka has revised down the death toll from last Sunday's wave of bombings by more than 100, to "about 253", the health ministry says.
It blamed a calculation error and the difficulty of identifying victims.
Scores were killed and hundreds injured when suicide bombers struck hotels and churches in Colombo, Negombo and the eastern city of Batticaloa.
Most of those killed were Sri Lankan but dozens of foreigners were also among the casualties.
Nine people are suspected of carrying out the attacks. Police have continued carrying out raids and have issued photographs of seven people wanted in connection with the attacks.
