Year range Moby Dick and the Mighty Mightor

Currently, Moby Dick and the Mighty Mightor has a year range of 1967-1969: https://www.imdb.com/title/tt0173577/reference/  

However, as you can see, all episodes on IMDb are from 1967-1968. 

TV Maze also says this series ran from 1967-1968: https://www.tvmaze.com/shows/53369/moby-dick-and-the-mighty-mightor 

So does TMDB: https://www.themoviedb.org/tv/10644-moby-dick-and-mighty-mightor/season/1 

Can a staffer look into this and fix the year range please?