diff --git a/tasks/to-do/20-replicas-render-actors-act.md b/tasks/in-progress/20-replicas-render-actors-act.md
similarity index 99%
rename from tasks/to-do/20-replicas-render-actors-act.md
rename to tasks/in-progress/20-replicas-render-actors-act.md
index 0ce683d..209b962 100644
--- a/tasks/to-do/20-replicas-render-actors-act.md
+++ b/tasks/in-progress/20-replicas-render-actors-act.md
@@ -1,6 +1,6 @@
 # 20 — Replica etiquette: the actor's board acts, everyone else renders
 
-**Status:** To Do
+**Status:** In Progress
 **Assignee:** istos
 **Priority:** High — without it, task 19 turns every board action into N duplicate side effects
 **Type:** Feature