Planning
Link blocking work with dependencies
Updated June 9, 2026
Dependencies capture when one task must wait for another — so the team can see what's blocked and work in the right order. Dependencies are a board feature you enable per board.
You'll need admin access
Dependencies are toggled in Board Settings, available to board admins.
Enable dependencies
Open Board Settings → Features
From the board's options menu (⋯), choose Board Settings, then open the Features tab.
Turn on Task Dependencies
Switch Task Dependencies on — "Track task relationships and blocking dependencies for better project flow."
Link two tasks
Open a task's detail panel and find Linked Tasks, then Link Task:
Choose the relationship
Pick a Relationship Type:
- is blocked by — this task can't start until the selected task is complete.
- blocks — the selected task can't start until this one is complete.
Find the other task
Search across your boards and select the task to link. Milestone won't let you create a circular dependency.
The task detail panel then shows two groups: This task waits for and Tasks waiting for this.
Blocked tasks can't be completed
If a task is blocked by an incomplete dependency, Milestone prevents you from marking it done until the blocker is finished — so the order of work stays honest.
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