diff --git a/docs/modernization/tasks.md b/docs/modernization/tasks.md
index dd38134..4cf3ae0 100644
--- a/docs/modernization/tasks.md
+++ b/docs/modernization/tasks.md
@@ -1358,6 +1358,12 @@ ctest --preset desktop-fast --build-config Debug -R "pp_paint_renderer_composito
 | --- | --- | ---: | --- | --- |
 | 2026-06-13 | STR-016 | +2 renderer boundary and OpenGL parity | `ctest --preset desktop-fast --build-config Debug -R "pp_paint_renderer_compositor|pp_paint_renderer_stroke_execution" --output-on-failure` | `pending` |
 
+### Completed Task Log
+
+| Date | Task | Score | Validation | Commit |
+| --- | --- | ---: | --- | --- |
+| 2026-06-13 | STR-016 | +2 renderer boundary and OpenGL parity | `ctest --preset desktop-fast --build-config Debug -R "pp_paint_renderer_compositor|pp_paint_renderer_stroke_execution" --output-on-failure` | `pending` |
+
 ### STR-012 - Extract Preview Final Composite Orchestration
 
 Status: Done