diff --git a/internal/sms-gateway/models/migrations/mysql/20240214195939_device_last_seen.sql b/internal/sms-gateway/models/migrations/mysql/20240214195939_device_last_seen.sql
index 5ab3b90..a87bdcc 100644
--- a/internal/sms-gateway/models/migrations/mysql/20240214195939_device_last_seen.sql
+++ b/internal/sms-gateway/models/migrations/mysql/20240214195939_device_last_seen.sql
@@ -1,7 +1,7 @@
 -- +goose Up
 -- +goose StatementBegin
 ALTER TABLE `devices`
-ADD `last_seen` datetime NOT NULL;
+ADD `last_seen` datetime(3) NOT NULL;
 -- +goose StatementEnd
 -- +goose StatementBegin
 UPDATE `devices`
diff --git a/internal/sms-gateway/models/models.go b/internal/sms-gateway/models/models.go
index 45a9ce5..00dd933 100644
--- a/internal/sms-gateway/models/models.go
+++ b/internal/sms-gateway/models/models.go
@@ -34,7 +34,7 @@ type Device struct {
 	AuthToken string  `gorm:"not null;uniqueIndex;type:char(21)"`
 	PushToken *string `gorm:"type:varchar(256)"`
 
-	LastSeen time.Time `gorm:"type:datetime;autoCreateTime"`
+	LastSeen time.Time `gorm:"not null;autocreatetime:false;default:CURRENT_TIMESTAMP(3)"`
 
 	UserID string `gorm:"not null;type:varchar(32)"`