Technical challenges are being blamed for a delay in increasing the speed of broadband internet connections in Guernsey.
Work to double current connection speeds to two megabytes for private customers and faster for businesses were meant to be finished by 31 March.
More than two-thirds of the households on the island have a broadband internet connection.
Final testing of the new services is scheduled for next week.
Russell Sharman, chief technical officer of Cable and Wireless, said he regretted the delay but the upgrade was a complex project.