diff --git a/runtime/actions.py b/runtime/actions.py
index 117ea30..29a349f 100644
--- a/runtime/actions.py
+++ b/runtime/actions.py
@@ -93,8 +93,9 @@ def execute(
             "summary": summary,
             "event_type": event.get("event_type", "note"),
         }
-        if event.get("workstream_id"):
-            payload["workstream_id"] = event["workstream_id"]
+        workplan_id = event.get("workplan_id") or event.get("workstream_id")
+        if workplan_id:
+            payload["workplan_id"] = workplan_id
         try:
             resp = httpx.post(
                 api_base.rstrip("/") + "/progress/",
diff --git a/runtime/prompts/daily_statehub_wsgi_triage.md b/runtime/prompts/daily_statehub_wsgi_triage.md
index 692fb4b..02e1a41 100644
--- a/runtime/prompts/daily_statehub_wsgi_triage.md
+++ b/runtime/prompts/daily_statehub_wsgi_triage.md
@@ -230,7 +230,7 @@ source: daily-state-hub-wsjf-triage
 When the State Hub API is reachable, append one progress event for the review:
 
 - `topic_id`: Custodian topic id when known
-- `workstream_id`: `99993845-be6a-401d-be98-f8107014abed`
+- `workplan_id`: `<custodian workplan uuid when known>`
 - `event_type`: `daily_triage`
 - `summary`: one sentence summarizing the top recommendation and loose-end count
 - `detail`: include top three recommendations, input health, and any human gates
diff --git a/runtime/tests/test_actions.py b/runtime/tests/test_actions.py
index 9d7d4db..b8551e4 100644
--- a/runtime/tests/test_actions.py
+++ b/runtime/tests/test_actions.py
@@ -102,7 +102,7 @@ class TestExecuteLive:
     def test_posts_progress_event(self):
         plan = {
             "progress_events": [
-                {"summary": "session note", "workstream_id": "ws-1", "event_type": "note"}
+                {"summary": "session note", "workplan_id": "ws-1", "event_type": "note"}
             ],
             "tasks_to_update": [],
             "tasks_to_flag": [],
@@ -113,6 +113,8 @@ class TestExecuteLive:
         mock_post.assert_called_once()
         payload = mock_post.call_args[1]["json"]
         assert payload["summary"] == "session note"
+        assert payload["workplan_id"] == "ws-1"
+        assert "workstream_id" not in payload
 
     def test_patches_task_status(self):
         plan = {