diff --git a/docs/modernization/roadmap.md b/docs/modernization/roadmap.md
index 1e37ee81..5479cbec 100644
--- a/docs/modernization/roadmap.md
+++ b/docs/modernization/roadmap.md
@@ -3235,7 +3235,7 @@ Results:
   the legacy OpenGL blend draw.
 - `STR-016` completed on 2026-06-13 in `b9ed78e1`; the per-layer composite
   block moved out of `Canvas::draw_merge()`, and the remaining
-  `draw_checkerboard`/helper-shape cleanup is archived.
+  `draw_checkerboard`/helper-shape cleanup is archived in `DEBT-0036`.
 - `Canvas::draw_merge_branch_orchestration()` and
   `Canvas::draw_merge_temporary_paint_branch()` later kept narrowing
   `DEBT-0036`; archived.