diff --git a/migrations/000.438.sql b/migrations/000.438.sql
new file mode 100644
index 0000000..5dd5c9a
--- /dev/null
+++ b/migrations/000.438.sql
@@ -0,0 +1,30 @@
+-- Blacklist week 3 and 4 batches (UK and NL for all product groups)
+
+-- From 000.432:
+-- Week 3 ref3 = 'ugPF92'
+-- Week 4 ref3 = '1xKnvR'
+
+INSERT INTO product_blacklist (product_id, group_id, market_id)
+    SELECT productid, 1, (select id from markets where name = 'NL') FROM "product-products" WHERE ref3 in ('ugPF92', '1xKnvR')
+    ON CONFLICT DO NOTHING;
+INSERT INTO product_blacklist (product_id, group_id, market_id)
+    SELECT productid, 2, (select id from markets where name = 'NL') FROM "product-products" WHERE ref3 in ('ugPF92', '1xKnvR')
+    ON CONFLICT DO NOTHING;
+INSERT INTO product_blacklist (product_id, group_id, market_id)
+    SELECT productid, 3, (select id from markets where name = 'NL') FROM "product-products" WHERE ref3 in ('ugPF92', '1xKnvR')
+    ON CONFLICT DO NOTHING;
+INSERT INTO product_blacklist (product_id, group_id, market_id)
+    SELECT productid, 7, (select id from markets where name = 'NL') FROM "product-products" WHERE ref3 in ('ugPF92', '1xKnvR')
+    ON CONFLICT DO NOTHING;
+INSERT INTO product_blacklist (product_id, group_id, market_id)
+    SELECT productid, 1, (select id from markets where name = 'GB') FROM "product-products" WHERE ref3 in ('ugPF92', '1xKnvR')
+    ON CONFLICT DO NOTHING;
+INSERT INTO product_blacklist (product_id, group_id, market_id)
+    SELECT productid, 2, (select id from markets where name = 'GB') FROM "product-products" WHERE ref3 in ('ugPF92', '1xKnvR')
+    ON CONFLICT DO NOTHING;
+INSERT INTO product_blacklist (product_id, group_id, market_id)
+    SELECT productid, 3, (select id from markets where name = 'GB') FROM "product-products" WHERE ref3 in ('ugPF92', '1xKnvR')
+    ON CONFLICT DO NOTHING;
+INSERT INTO product_blacklist (product_id, group_id, market_id)
+    SELECT productid, 7, (select id from markets where name = 'GB') FROM "product-products" WHERE ref3 in ('ugPF92', '1xKnvR')
+    ON CONFLICT DO NOTHING;