diff --git a/dao/im.go b/dao/im.go
index 5112d34..26805bf 100644
--- a/dao/im.go
+++ b/dao/im.go
@@ -9,7 +9,7 @@ type Session struct {
 	gorm.Model
 	UserID  int    `gorm:"column:user_id"` //只能由用户创建
 	Name    string `gorm:"column:name"`
-	Context []int  `gorm:"column:context"` //会话上下文
+	Context []int  `gorm:"column:context;type:json"` //会话上下文
 }
 
 type Message struct {