Need Java Help Java, Arraylist and removal

Every time I try to call ArrayList.remove() on an element while in a for each loop, Java throws a ConcurrentModificationException.  I need to remove an element in a for loop because in there is where I look through the objects to find objects which meet the criteria for removal.

it would not let me do this:

public void updateState() {
        for(Renderable renderable:renderables){
            renderable.updateState();
            if(renderable.markedForDeletion){
                renderables.remove(renderable);
            }
        }
    }

threw the exception when tried to remove in this manner