diff --git a/Home.md b/Home.md
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@@ -47,6 +47,11 @@ Staged import pipeline for Cantaloupe machine data:
 
 **Column mapping:** Heuristic word-subset matching of Excel headers to canteen schema fields (machine_id, serial_number, name, customer, location, address, etc.)
 
+**New columns (v4 migration, 2026-05-23):** 
+- `dex_report_date` — Cantaloupe "Last Dex Report Time" column (Python datetime → ISO)
+- `deployed` — Yes/No string from Excel export
+- `pulled_date` — Equipment removal/pulled date
+
 **Tests:** 10 unit tests (test_cantaloupe_sync.py) + 23 integration tests (test_sync_api.py). All 33 pass.
 
 ### Cron Job — 6h Auto-Sync (since e9d18cb)