diff --git a/workplans/CUST-WP-0033-interface-change-registry.md b/workplans/CUST-WP-0033-interface-change-registry.md
index a63bfd2..f2bd945 100644
--- a/workplans/CUST-WP-0033-interface-change-registry.md
+++ b/workplans/CUST-WP-0033-interface-change-registry.md
@@ -4,7 +4,7 @@ type: workplan
 title: "Interface Change Registry — Coordinated API Evolution"
 domain: custodian
 repo: the-custodian
-status: active
+status: done
 owner: custodian
 topic_slug: custodian
 created: "2026-04-26"
@@ -28,7 +28,7 @@ Reference concept: `canon/projects/custodian/interface_change_registry_v0.1.md`
 
 ```task
 id: CUST-WP-0033-T01
-status: todo
+status: done
 priority: high
 state_hub_task_id: "6bc77d3c-78e0-485a-a3bc-b5987c4ccc53"
 ```
@@ -50,7 +50,7 @@ existing test suite.
 
 ```task
 id: CUST-WP-0033-T02
-status: todo
+status: done
 priority: high
 state_hub_task_id: "7664551e-0871-4e82-a9ba-b59be515c47c"
 ```
@@ -78,7 +78,7 @@ invalid transitions.
 
 ```task
 id: CUST-WP-0033-T03
-status: todo
+status: done
 priority: medium
 state_hub_task_id: "8f8403a2-4444-4196-9845-ea9c66b674eb"
 ```
@@ -99,7 +99,7 @@ list (empty or populated); no regression on existing dispatch tests.
 
 ```task
 id: CUST-WP-0033-T04
-status: todo
+status: done
 priority: medium
 state_hub_task_id: "d9135829-954e-41de-af9f-607768916478"
 ```
@@ -121,7 +121,7 @@ of how many inbox messages were sent.
 
 ```task
 id: CUST-WP-0033-T05
-status: todo
+status: done
 priority: low
 state_hub_task_id: "d2fcbe83-c5a7-400c-a53b-ff1950795814"
 ```
@@ -144,7 +144,7 @@ and `GET /interface-changes/?status=draft`.
 
 ```task
 id: CUST-WP-0033-T06
-status: todo
+status: done
 priority: low
 state_hub_task_id: "47d7bea8-b5fb-4fc4-9ec5-9ed5e0cdef72"
 ```