Immer access generic object value by key

Question

I'm using immer with generic, here is a minimal example:

function foo<T extends string>(record: Record<T, boolean>, key: T) {
  return produce(record, (draftState) => {
    draftState[key] = true;
  });
}

but this example results in typescript error Type 'T' cannot be used to index type 'Draft<Record<T, boolean>>'.

My question is, how can I access value by key in a generic record wrapped in Draft or Immutable type without causing error above?