diff --git a/versions.yaml b/versions.yaml
index 9bf04c5..c7edcee 100644
--- a/versions.yaml
+++ b/versions.yaml
@@ -2,15 +2,18 @@
 #
 # Source of truth: which upstream Odoo nightly each major is pinned to.
 # Customer instances pull from registry.odoosky.cloud/odoosky/docker-mirror/odoo:<tag>
-# where <tag> matches the entries below.
+# via the instance-template-v3 chart's odoo.pinnedTags map.
 #
 # Bumping policy:
 #   1. Pull a candidate upstream nightly to lab1.
-#   2. Smoke it: deploy a fresh test tenant, login, install one demo
-#      addon, check pod logs for SQL/runtime errors.
+#   2. Smoke it: deploy a fresh test tenant on a sandbox cluster,
+#      login, install one demo addon, check pod logs for SQL/runtime
+#      errors.
 #   3. If clean, push it to our mirror under the same date tag.
-#   4. Update this file. Commit. ArgoCD picks up the new chart values
-#      and customer instances pull the new image on next pod restart.
+#   4. Update this file AND instance-template-v3/values.yaml's
+#      odoo.pinnedTags map IN THE SAME PR. ArgoCD picks up the new
+#      chart values and customer instances pull the new image on next
+#      pod restart.
 #   5. If broken, do nothing. Customers stay on the previous pinned
 #      tag until a clean candidate appears.
 #
@@ -20,6 +23,13 @@
 # minutes' string-quoted, broke every login).
 
 majors:
+  - major: "19.0"
+    pinnedTag: "19.0-20260421"
+    upstreamSource: "docker.io/library/odoo:19.0-20260421"
+    blessedAt: "2026-05-06"
+    blessedBy: "m@havari.me"
+    notes: "Apr 21 nightly. Same revision baseline as 18.0."
+
   - major: "18.0"
     pinnedTag: "18.0-20260421"
     upstreamSource: "docker.io/library/odoo:18.0-20260421"
@@ -27,8 +37,24 @@ majors:
     blessedBy: "m@havari.me"
     notes: "Apr 21 nightly. Predates the 2026-05-04 SQL regression."
 
-  # Add 17.0 / 16.0 / 19.0 entries here as we bring them into the
-  # platform. Each entry MUST be tested before commit.
+  - major: "17.0"
+    pinnedTag: "17.0-20260421"
+    upstreamSource: "docker.io/library/odoo:17.0-20260421"
+    blessedAt: "2026-05-06"
+    blessedBy: "m@havari.me"
+    notes: "Apr 21 nightly. Same revision baseline as 18.0."
+
+  - major: "16.0"
+    pinnedTag: "16.0-20250909"
+    upstreamSource: "docker.io/library/odoo:16.0-20250909"
+    blessedAt: "2026-05-06"
+    blessedBy: "m@havari.me"
+    notes: "Final upstream nightly for 16.0 — Odoo SA stopped publishing 16.0 nightlies after Sep 9 2025 (EOL)."
+
+# Postgres images are also mirrored to registry.odoosky.cloud/odoosky/
+# docker-mirror/postgres. Currently mirrored: 16-alpine, 17-alpine,
+# 15-alpine. Tag-as-major (no date pinning) is acceptable for postgres
+# because Alpine tags are stable per major.
 
 # Smoke checklist (paste into your bump PR description):
 #   [ ] nerdctl pull <upstream>