diff --git a/docs/roadmap/implementation.md b/docs/roadmap/implementation.md
index df581d3f..11e8432d 100644
--- a/docs/roadmap/implementation.md
+++ b/docs/roadmap/implementation.md
@@ -357,6 +357,8 @@ or exact-prose/change-detector assertions; consolidate rather than multiply them
 
 ## Stage 8 — Final Integration Verification And Handoff
 
+**Status:** Completed 2026-09-25.
+
 **Goal:** Verify the complete upgraded application and documentation against the
 feature roadmap. One final verification prompt; fix only defects within scope.