diff --git a/skills/orchestrate/SKILL.md b/skills/orchestrate/SKILL.md
index 08d7798..b76a654 100644
--- a/skills/orchestrate/SKILL.md
+++ b/skills/orchestrate/SKILL.md
@@ -242,7 +242,8 @@ When multiple risk tags are present, take the union of all mandatory reviewers.
 ### Git flow
 
 Workers signal `RFR` when done. You control commits:
-- `LGTM` → worker commits → **update the plan file: mark the completed step as `- [x]`**
+- `LGTM` → worker commits
+- **Mark a step `- [x]` in the plan file only when every worker assigned to that step has received LGTM** — a single worker committing does not complete a step
 - `REVISE` → worker fixes and resubmits with `RFR`
 - Merge worktree branches after individual validation
 - On Tier 2+: merge each worker's branch after validation, resolve conflicts if branches overlap