diff --git a/PLAN.md b/PLAN.md
index 95902b7..3f18b94 100644
--- a/PLAN.md
+++ b/PLAN.md
@@ -117,12 +117,12 @@ Check off items as completed. Each phase builds on the previous.
 - [x] **Commit checkpoint** (876e817)
 
 ### Step 3.4: Animal Movement
-- [ ] Update projections for AnimalMoved event
-- [ ] Close old location interval, open new one
-- [ ] Update animal_registry and live_animals_by_location
-- [ ] Add move_animals to services/animal.py
-- [ ] Write tests: move validation (to!=from, single from_location), interval updates
-- [ ] **Commit checkpoint**
+- [x] Update projections for AnimalMoved event
+- [x] Close old location interval, open new one
+- [x] Update animal_registry and live_animals_by_location
+- [x] Add move_animals to services/animal.py
+- [x] Write tests: move validation (to!=from, single from_location), interval updates
+- [x] **Commit checkpoint** (b89ea41)
 
 ### Step 3.5: Animal Attributes Update
 - [ ] Update projections for AnimalAttributesUpdated event