LINQ where in the list

I have a list of projects iD

IEnumerable projects

This contains four numbers, say 2,5,6,9

and these are my AllProjects

 IEnumerable<Project> AllProjects = await ctx.Projects.Where(x => x.ClientID == clientid).Where(y => y.Released == true).ToListAsync();

      

        
        
        
      

    

I want to filter my AllProjects with project id 2,5,6,9

it should be something like ...

 AllProjects = AllProjects.Where(x=>x.ProjectID == ????)

      

        
        
        
      

    

thank