diff --git a/model/prefill_group.go b/model/prefill_group.go
index 51e3e7f1..5db78cb2 100644
--- a/model/prefill_group.go
+++ b/model/prefill_group.go
@@ -1,9 +1,9 @@
 package model
 
 import (
+    "encoding/json"
     "one-api/common"
 
-    "gorm.io/datatypes"
     "gorm.io/gorm"
 )
 
@@ -18,7 +18,7 @@ type PrefillGroup struct {
     Id          int            `json:"id"`
     Name        string         `json:"name" gorm:"size:64;not null;uniqueIndex:uk_prefill_name,where:deleted_at IS NULL"`
     Type        string         `json:"type" gorm:"size:32;index;not null"`
-    Items       datatypes.JSON `json:"items" gorm:"type:json"`
+    Items       json.RawMessage `json:"items" gorm:"type:json"`
     Description string         `json:"description,omitempty" gorm:"type:varchar(255)"`
     CreatedTime int64          `json:"created_time" gorm:"bigint"`
     UpdatedTime int64          `json:"updated_time" gorm:"bigint"`