diff --git a/infra/scripts/deploy-erosi.sh b/infra/scripts/deploy-erosi.sh
index 3d5ea1c..017bfd8 100755
--- a/infra/scripts/deploy-erosi.sh
+++ b/infra/scripts/deploy-erosi.sh
@@ -206,6 +206,16 @@ for f in supabase/migrations/*.sql; do
 	fi
 done
 
+# Force PostgREST to reload its schema cache. Without this, RPCs added in
+# the migrations above 404 with "Could not find the function ... in the
+# schema cache" until the rest container is restarted. Confirmed bug on
+# 2026-05-18 after migration 026 added set_item_frequency_weight +
+# purge_item_frequency. NOTIFY is cheaper than a container restart.
+echo "--- Reloading PostgREST schema cache"
+docker compose --env-file .env -f infra/docker-compose.erosi.yml exec -T db \
+	psql -U postgres -d postgres </dev/null \
+	-c "NOTIFY pgrst, 'reload schema';"
+
 # Record the successful deploy in .deploys.log (read by rollback-erosi.sh).
 backup_file=$(cat /tmp/.colectivo-last-backup 2>/dev/null || echo "")
 deploy_ts=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
diff --git a/infra/scripts/rollback-erosi.sh b/infra/scripts/rollback-erosi.sh
index c9ffdcc..e1a91f3 100755
--- a/infra/scripts/rollback-erosi.sh
+++ b/infra/scripts/rollback-erosi.sh
@@ -175,6 +175,13 @@ cd /opt/colectivo
 GIT_SHA="$GIT_SHA" docker compose --env-file .env -f infra/docker-compose.erosi.yml \
 	build --build-arg GIT_SHA="$GIT_SHA" app
 GIT_SHA="$GIT_SHA" docker compose --env-file .env -f infra/docker-compose.erosi.yml up -d
+
+# Reload PostgREST schema cache so any RPCs that changed shape between
+# the rolled-back schema and the current rest container snapshot are
+# resolved. Mirrors the same step at the end of deploy-erosi.sh.
+docker compose --env-file .env -f infra/docker-compose.erosi.yml exec -T db \
+	psql -U postgres -d postgres </dev/null \
+	-c "NOTIFY pgrst, 'reload schema';"
 REMOTE
 
 echo ""