Google delayed its plan to phase out cookies, software that lets marketers track users, in its Chrome browser this year, pushing to 2025 a move that will ultimately transform how advertisements are targeted on websites.

The Alphabet Inc company said in a blog post Tuesday that it’s still working with the ad industry and regulators on the plan, including the UK’s Competition and Markets Authority, which is conducting a review of Google’s practices. Google said it hopes to eliminate third-party cookies early next year, provided it can come to an agreement with regulators.