“One way to think of how a core update operates is to imagine you made a list of the top 100 movies in 2015. A few years later in 2019, you refresh the list. It’s going to naturally change. Some new and wonderful movies that never existed before will now be candidates for inclusion. You might also reassess some films and realize they deserved a higher place on the list than they had before. The list will change, and films previously higher on the list that move down aren’t bad. There are simply more deserving films that are coming before them,” Google wrote.
In other words, update and refresh your material
Google advice on improving your site's ranking for future core ranking update - Search Engine Land
In other words, update and refresh your material
Google advice on improving your site's ranking for future core ranking update - Search Engine Land