diff --git a/migrations/000.106.sql b/migrations/000.106.sql
new file mode 100644
index 0000000..b7af7b5
--- /dev/null
+++ b/migrations/000.106.sql
@@ -0,0 +1,8 @@
+-- P5-3794 Add EDI invoice type to contract_customers
+
+ALTER TABLE contract_customers DROP CONSTRAINT contract_customers_send_invoice_check;
+
+ALTER TABLE contract_customers ADD CONSTRAINT contract_customers_send_invoice_check
+    CHECK (send_invoice::text = ANY (ARRAY['snail mail'::character varying::text,
+    'email'::character varying::text, 'edi'::character varying::text])
+);