diff --git a/Home.md b/Home.md
index 66cba2f..f7ac047 100644
--- a/Home.md
+++ b/Home.md
@@ -253,6 +253,16 @@ When building_number is entered in the manual asset form or location form, it au
 | `CANTEEN_DB_PATH` | `./assets.db` |
 | `CANTEEN_SKIP_AUTH` | (empty) |
 
+## DB Schema
+
+### Assets table (v5)
+Two new columns added May 2026:
+- `dex_report_date TEXT DEFAULT NULL` — Cantaloupe 'Last Dex Report Time' as ISO datetime
+- `install_date TEXT DEFAULT NULL` — deployment date (from Excel 'Deployed' + 'Added Date', or set on replacement approval)
+
+Migration pattern: PRAGMA table_info + ALTER TABLE ADD COLUMN (idempotent, runs in init_db()).
+Applied in both server.py and admin_server.py.
+
 ## Links
 - [README](https://gitea.ourpad.casa/shawn/canteen-asset-tracker/src/branch/main/README.md)
 - [PROJECT.md](https://gitea.ourpad.casa/shawn/canteen-asset-tracker/src/branch/main/PROJECT.md)