diff --git a/docs/implplan/SPRINT_3405_0001_0001_postgres_vulnerabilities.md b/docs/implplan/SPRINT_3405_0001_0001_postgres_vulnerabilities.md
index 29dcdaf9a..6080b3ad0 100644
--- a/docs/implplan/SPRINT_3405_0001_0001_postgres_vulnerabilities.md
+++ b/docs/implplan/SPRINT_3405_0001_0001_postgres_vulnerabilities.md
@@ -89,7 +89,7 @@
 ## Upcoming Checkpoints
 | Date (UTC) | Checkpoint | Owner | Notes |
 | --- | --- | --- | --- |
-| 2025-12-09 | Enable dual-import + schedule SBOM sample set | Concelier Guild | Turn on PG-T5b.3.1 dual-import; pick 10k advisory sample + SBOM set for parity run. |
+| 2025-12-09 | Enable dual-import + schedule SBOM sample set | Concelier Guild | Turn on PG-T5b.3.1 dual-import; pick 10k advisory sample + SBOM set (see `docs/db/reports/vuln-parity-sbom-sample-20251209.md`). |
 | 2025-12-11 | Parity run (Mongo vs Postgres) + findings report | Concelier Guild | Execute PG-T5b.3.2/PG-T5b.4.1–4.4; capture counts/hashes/findings deltas and store report under `docs/db/reports/vuln-parity-20251211.md`. |
 | 2025-12-15 | Cutover readiness review | Concelier Guild · Excititor Guild | If parity clean, schedule PG-T5b.5 perf tuning and PG-T5b.6 cutover window; unblock Sprint 3406 Wave 6a. |