diff --git a/migrations/20260326090000_unique_equipment_signal_role.sql b/migrations/20260326090000_unique_equipment_signal_role.sql
new file mode 100644
index 0000000..b3b0f8f
--- /dev/null
+++ b/migrations/20260326090000_unique_equipment_signal_role.sql
@@ -0,0 +1,2 @@
+ALTER TABLE point
+    ADD CONSTRAINT uq_equipment_signal_role UNIQUE (equipment_id, signal_role);