Thursday, February 03, 2011
Their current term expires in August, raising fears that the UN-backed government could become illegal.
It has failed to achieve its target of enacting a new constitution and organising elections by August.
The government only controls parts of the capital and is battling Islamist groups which dominate southern Somalia.
Correspondents say President Sheikh Sharif Sheikh Ahmed, a moderate Islamist, is expected to seek re-election.
Mr Adan said this would be done in July.
"Parliament will carry out huge reforms in order to serve the people of Somalia," he said. "This is a victory for future Somali democracy."
Shortly before the African Union agreed to extend the mandate of the Somali parliament, AU Commission Chairman Jean Ping accused the government of "non-performance" and failing to make enough progress in bringing peace to the country.
The current parliament was chosen during a peace conference in 2004.
Somalia has not had a functioning national government since Siad Barre was ousted 20 years ago.