diff --git a/docs/roadmap/implementation.md b/docs/roadmap/implementation.md
index d6bd506..c4a682b 100644
--- a/docs/roadmap/implementation.md
+++ b/docs/roadmap/implementation.md
@@ -204,6 +204,8 @@ Commit message: `Simplify the Seriatim role`
 
 ## Stage 2: Add Focused Behavioral Coverage
 
+**Completion:** Complete (`ansible-role-seriatim` commit `718030e`).
+
 ### Objective
 
 Extend the baseline test harness only far enough to prove the revised feature's