On the heels of a report from the WSJ last week about Apple planning to roll out more protections for kids’ apps on iOS, the company has detailed its latest steps to increase privacy and security for young users.

Apple didn’t specify the changes for apps in the kids category on stage during the WWDC keynote, but an update to its App Store Review Guidelines covers the new changes.

This update should eliminate any possibility of kids’ apps collecting and sending data to third-parties, that is if developers adhere to the new rules.

The most recent investigative report from the WSJ found that 79 out of 80 apps tested that were featured in the iOS App Store used trackers for analytics, ads, or marketing, with the average app using four trackers.

One of the apps that was discovered to be sending children’s data to Facebook was “Curious World.”

You can see the other updated App Store Review Guidelines here.