Etherstack (ASX:ESK) agreed to a scope change for its primary project in the UK, and the costs associated with the additional scope, which have been agreed with the government, will have a revenue uplift of 1.5 million pounds sterling, according to a Tuesday Australian bourse filing.

The company's management expects the additional professional service revenue to contribute beneficially to full year 2027, the filing said.

Etherstack's shares declined nearly 2% in recent trading on Tuesday.