He said The DUP’s approach has been to engage in a "minimalist way"
Sinn Féin President Gerry Adams says there's been no real progress in talks at Stormont.
Parties in Northern Ireland have until tomorrow afternoon to reach a deal that will allow a return to a power-sharing government.
Mr Adams said the DUP had to work in genuine partnership with nationalists and republicans.
He said progress was vital on legacy issues like the introduction of an Irish Language Act and marriage equality.
Speaking earlier today Adams said "Unionism is at a crossroads. The DUP needs to decide whether and when it will rise to the challenges of this time and work in genuine partnership with nationalists and republicans, and all sections of our society, on the basis of equality and respect. For everyone.
"Regrettably, thus far in the talks process there has been no substantive progress across all of the key issues that are at the core of the current impasse.
"Martin McGuinness set the tone for the current phase of negotiations when he said that there can be no return to the status quo.
"The DUP’s approach thus far has been to engage in a minimalist way on all of the key issues, including legacy issues; an Irish Language Act; a Bill of Rights; and marriage equality.
"I am sure this concern is shared by the Irish government. The Taoiseach knows that he is the co-equal guarantor, with the British PM, of the Good Friday and other Agreements."
He finished by saying "Sinn Féin is up for building a pluralist rights based society as set out in numerous agreements. Is the DUP?"