While delivering a national address, Bio affirmed the need for a review of the electoral system, part of the agreement reached by the ruling party and the nation’s opposition parties earlier this month.
"Reviewing our election systems is critical to strengthening our democracy," Bio said.
"As we move forward, I urge all Sierra Leoneans to embrace the spirit of unity and reconciliation", he added.
Bio encouraged the nation to set aside its political differences and work together.
"The government will work with the main opposition party and all other political parties to ensure that it is fully implemented," he said.
Bio, who was first elected in 2018, was re-elected in June with 56.17 % of the vote, according to results published by the electoral commission — just over the 55 % needed to avoid a run-off.
International observers, however, condemned inconsistencies and a lack of transparency in the count, as well as acts of violence and intimidation.
The main opposition All People's Congress, APC, disputed the results of the presidential, legislative and local elections on June 24 and has since boycotted all levels of government.
The government and the APC signed an agreement last week following talks mediated by the Commonwealth, the African Union and the West African bloc ECOWAS.
The APC agreed to end its boycott and begin participating in government in exchange for an end to detentions and court cases it said were politically motivated.
It also agreed to set up an inter-party committee to review the June elections with development partners.
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