Do not allow access to power query or block query viewing

Hello
I am needing to block access to transform data (power query). There are several users who have access to my pbix file and can see the queries. They can't edit data sources, but I don't want them to be able to view SQL queries. How can I block access or at least not see what the query says? If a user is positioned in the "Origin" step, they view the query.