Crawley Library will be closed for a week to allow for the updating of technology and other improvements.
The library, which opened five years ago in Southgate Avenue, will close from 5pm on Saturday (October 5) and re-open on Monday October 14.
When it opened, it was the first library in West Sussex to have self-service terminals.
Newer versions have now been installed in all of the county’s 36 libraries and the Crawley terminals are being exchanged, to give all libraries the same technology.
Cllr Lionel Barnard, county council cabinet member who oversees the library service, said: “The county’s self-service library terminals were pioneered at Crawley, but in five years the technology has moved on.
“We’re also taking the opportunity to reposition them and create more space.
“We are planning a better flow of customers around the building, and in general a better customer experience.”
The project is being paid for by contributions from developers working on local projects. The funding means small improvements can be made without affecting the Council Tax bill.
Customers can still borrow up to 20 items before the library closes.
No books or other items will be due to be returned to the library during the closure period.