diff --git a/PLAN.md b/PLAN.md
index 3f18b94..5ca5c5a 100644
--- a/PLAN.md
+++ b/PLAN.md
@@ -125,11 +125,11 @@ Check off items as completed. Each phase builds on the previous.
 - [x] **Commit checkpoint** (b89ea41)
 
 ### Step 3.5: Animal Attributes Update
-- [ ] Update projections for AnimalAttributesUpdated event
-- [ ] Close old attribute intervals, open new ones for changed attrs
-- [ ] Add update_attributes to services/animal.py
-- [ ] Write tests: only changed attrs create new intervals
-- [ ] **Commit checkpoint**
+- [x] Update projections for AnimalAttributesUpdated event
+- [x] Close old attribute intervals, open new ones for changed attrs
+- [x] Add update_attributes to services/animal.py
+- [x] Write tests: only changed attrs create new intervals
+- [x] **Commit checkpoint** (dc7700d)
 
 ### Step 3.6: Animal Tagging
 - [ ] Create migration for tag_suggestions table