Year range Precious Pupp

Currently, Precious Pupp has a year range of 1965-1967: https://www.imdb.com/title/tt0303512/reference/ 

However, as you can see, all episodes on IMDb are from 1965-1966.

TMDB also states episodes from 1965-1966: https://www.themoviedb.org/tv/303388-precious-pupp 

The same goes for TVDB: https://thetvdb.com/series/precious-pupp/allseasons/official 

Can a staffer fix this please?