The US Department of Health and Human Services said Tuesday it plans to work with food companies to phase out use of many artificial food colorings by 2026, but industry lobbyists say there’s no agreement in place to remove the dyes, according to people familiar with the matter.

In its announcement, HHS said it planned to eliminate artificial food dyes by working with companies that rely heavily on them. HHS Secretary Robert F. Kennedy Jr. said his agency and the Food and Drug Administration had an “understanding” with the industry about their removal on a voluntary basis.