diff --git a/TODO b/TODO
index c8e1e43..490168d 100644
--- a/TODO
+++ b/TODO
@@ -102,7 +102,7 @@ Content-Type: application/issue
 ID: 7
 Type: feature
 Title: implement Formatter subsystem
-Status: in-progress
+Status: done
 Priority: high
 Created: 2026-03-13
 Relationships: dependsOn:1