Scarlett Johansson isn’t on Instagram. It’s fair to say that she’d stand a decent chance of being one of the platform’s most-followed people, but she’s not interested in sharing her everyday life with millions of followers. That wasn’t great news for the marketing team behind her upcoming film Jurassic World Rebirth.

“Even today, I got an email from Universal, and they’re like: ‘Hey, would you consider joining Instagram in tandem with the release of Jurassic World Rebirth?’ I get a lot of pressure to join social media,” Johansson told InStyle, revealing that she resisted that pressure and stood firm on her desire not to be a part of the social media machine.

She added, “The work that I put out there is all based on truth. That’s the key ingredient. So if I were a person who enjoyed social media, I could get on the bandwagon. But I’m not. And I think the film will do fine.”

Instagram and social media as a whole have increasingly become arguably the most important items in the movie marketing toolkit. Big Hollywood stars can command millions of eyeballs — Dwayne Johnson, for example, has just shy of 400 million Instagram followers — as potential audiences for big movies. A film the size of a Jurassic World sequel needs to make something in the arena of $600m (£464m) at the box office just to break even, so social media marketing could be worth millions.