diff --git a/tasks/to-do/48-a-phase-is-a-card-that-lists-its-cards.md b/tasks/in-progress/48-a-phase-is-a-card-that-lists-its-cards.md
similarity index 99%
rename from tasks/to-do/48-a-phase-is-a-card-that-lists-its-cards.md
rename to tasks/in-progress/48-a-phase-is-a-card-that-lists-its-cards.md
index 582297e..7fb4614 100644
--- a/tasks/to-do/48-a-phase-is-a-card-that-lists-its-cards.md
+++ b/tasks/in-progress/48-a-phase-is-a-card-that-lists-its-cards.md
@@ -1,6 +1,6 @@
 # 48 — A phase is a card that lists its cards
 
-**Status:** To Do
+**Status:** In Progress
 **Assignee:** istos
 **Priority:** High — everything else about phases reads this; get the
 shape wrong and three cards inherit it