diff --git a/sql/135-equivalences-quality-cleanup.sql b/sql/135-equivalences-quality-cleanup.sql
new file mode 100644
index 0000000..da3e6d6
--- /dev/null
+++ b/sql/135-equivalences-quality-cleanup.sql
@@ -0,0 +1,14 @@
+-- Migration 135: Equivalence quality cleanup
+-- Demotes auto_approved rows that no longer meet quality gates:
+-- 1. FX product has no standard_name → can't verify match quality
+-- Applied 2026-07-11 after adding standard_name gate to catalog-reconcile.
+
+UPDATE transceiver_equivalences e
+SET status = 'pending', updated_at = NOW()
+FROM transceivers fx
+WHERE e.flexoptix_id = fx.id
+  AND e.status = 'auto_approved'
+  AND fx.standard_name IS NULL;
+
+-- Result: 60,278 demoted from auto_approved → pending
+-- Remaining auto_approved: 20,838 (all with standard_name)