diff --git a/src/Shentun.Peis.EntityFrameworkCore/Migrations/PeisDbContextModelSnapshot.cs b/src/Shentun.Peis.EntityFrameworkCore/Migrations/PeisDbContextModelSnapshot.cs
index 9bdaa94..92735f8 100644
--- a/src/Shentun.Peis.EntityFrameworkCore/Migrations/PeisDbContextModelSnapshot.cs
+++ b/src/Shentun.Peis.EntityFrameworkCore/Migrations/PeisDbContextModelSnapshot.cs
@@ -1722,6 +1722,7 @@ namespace Shentun.Peis.Migrations
                     b.HasIndex("PayModeId");
 
                     b.HasIndex(new[] { "ChargeBackId", "PayModeId" }, "IX_charge_back_pay_pay_mode_id")
+                        .IsUnique()
                         .HasDatabaseName("IX_charge_back_pay_pay_mode_id1");
 
                     b.ToTable("charge_back_pay");