Learn English – Single word for “This task cannot proceed until these other tasks are completed first”

So, I'm creating a complex task manager. I have a list of tasks, but certain tasks cannot be started until others have finished. However, the position of a task on the list does not necessarily specify the order in which it has to be completed; some tasks can be done in tandem by different people, while some rely on another person(s) to complete other task(s) first.

I would like to list the tasks an item is waiting on next to it, with a single word to describe what that list represents like this:

1. Wash walls
2. Paint walls
3. Hang artwork (this task cannot be done until task 1 and task 2 are done)

Some shorter versions I've thought of are "pending: task 1 and task 2", "dependent: task 1 and task 2", "awaiting: task 1 and task 2", and "yielding: task 1 and task 2"

I don't think any of these words quite represent the situation properly, though I could be wrong.

Would you please suggest the correct single word to use in this situation?