New South Wales Premier Gladys Berejiklian has joined calls for a change to the lyrics of Australias national anthem, Advance Australia Fair.

Berejiklian said she supported the line, We are young and free, being changed to, We are one and free to acknowledge the nations 60,000 years of Indigenous history.

I feel for Indigenous Australians who dont feel the national anthem reflects them and their history, she told ABC on Wednesday.