diff --git a/TODO_process_tracking.md b/TODO_process_tracking.md
index 18a4cc4d..c0bf3784 100644
--- a/TODO_process_tracking.md
+++ b/TODO_process_tracking.md
@@ -28,7 +28,7 @@ Process(cmd=['archivebox', 'add', 'https://example.com'])           # CLI entry
 **File:** `archivebox/machine/models.py`
 
 ```python
-class Process(ModelWithHealthStats):
+class Process(ModelWithStateMachine):
     # ... existing fields ...
 
     # NEW: Parent process FK for hierarchy tracking