diff --git a/initialize/migrate/database/02125_subscribe_stock.down.sql b/initialize/migrate/database/02125_subscribe_stock.down.sql
new file mode 100644
index 0000000..c8482cc
--- /dev/null
+++ b/initialize/migrate/database/02125_subscribe_stock.down.sql
@@ -0,0 +1,5 @@
+
+-- This migration script reverts the inventory values in the 'subscribe' table
+UPDATE `subscribe`
+SET `inventory` = 0
+WHERE `inventory` = -1;
\ No newline at end of file
diff --git a/initialize/migrate/database/02125_subscribe_stock.up.sql b/initialize/migrate/database/02125_subscribe_stock.up.sql
new file mode 100644
index 0000000..88fead1
--- /dev/null
+++ b/initialize/migrate/database/02125_subscribe_stock.up.sql
@@ -0,0 +1,4 @@
+-- Update the `subscribe` table to set `inventory` to -1 where it is currently 0
+UPDATE `subscribe`
+SET `inventory` = -1
+WHERE `inventory` = 0;
\ No newline at end of file
diff --git a/internal/model/subscribe/subscribe.go b/internal/model/subscribe/subscribe.go
index b895cb7..c9c1046 100644
--- a/internal/model/subscribe/subscribe.go
+++ b/internal/model/subscribe/subscribe.go
@@ -15,7 +15,7 @@ type Subscribe struct {
 	UnitTime          string    `gorm:"type:varchar(255);not null;default:'';comment:Unit Time"`
 	Discount          string    `gorm:"type:text;comment:Discount"`
 	Replacement       int64     `gorm:"type:int;not null;default:0;comment:Replacement"`
-	Inventory         int64     `gorm:"type:int;not null;default:0;comment:Inventory"`
+	Inventory         int64     `gorm:"type:int;not null;default:-1;comment:Inventory"`
 	Traffic           int64     `gorm:"type:int;not null;default:0;comment:Traffic"`
 	SpeedLimit        int64     `gorm:"type:int;not null;default:0;comment:Speed Limit"`
 	DeviceLimit       int64     `gorm:"type:int;not null;default:0;comment:Device Limit"`