Incorrect Release Date on TV Series

The UK TV series Noah’s Castle - tt0197174 - was released and first transmitted in 1980. However, its title shows as “Noah’s Castle” (1979). All episodes are correctly dated as 1980, and there appears to be no release date entered at series level, so I’m not sure why the date in the title is incorrect. Please can this be amended? Many thanks CaptainSiCo ✈️