outdated
adjective
uk/ˌaʊtˈdeɪtɪd/ usold or old-fashioned and therefore not as good or as useful as something more modern or more recent:
outdated equipment/technology The company is finding it hard to compete because of the outdated equipment it is using.
Staff shortages and an outdated computer system are blamed for the problem.
The library has several outdated financial-planning books on its shelves, including a tax preparation guide from 1995.