diff --git a/src/ntqqapi/types/group.ts b/src/ntqqapi/types/group.ts
index 4ba3e07..6512575 100644
--- a/src/ntqqapi/types/group.ts
+++ b/src/ntqqapi/types/group.ts
@@ -45,7 +45,7 @@ export enum GroupMemberRole {
 }
 
 export interface GroupMember {
-  memberSpecialTitle: string
+  memberSpecialTitle?: string
   avatarPath: string
   cardName: string
   cardType: number
@@ -60,4 +60,7 @@ export interface GroupMember {
   isRobot: boolean
   sex?: Sex
   qqLevel?: QQLevel
+  isChangeRole: boolean
+  joinTime: string
+  lastSpeakTime: string
 }
diff --git a/src/onebot11/action/group/GetGroupMemberInfo.ts b/src/onebot11/action/group/GetGroupMemberInfo.ts
index cdd4a7d..2273f23 100644
--- a/src/onebot11/action/group/GetGroupMemberInfo.ts
+++ b/src/onebot11/action/group/GetGroupMemberInfo.ts
@@ -24,7 +24,11 @@ class GetGroupMemberInfo extends BaseAction<PayloadType, OB11GroupMember> {
         log('群成员详细信息结果', info)
         Object.assign(member, info)
       }
-      return OB11Constructor.groupMember(payload.group_id.toString(), member)
+      const ret = OB11Constructor.groupMember(payload.group_id.toString(), member)
+      const date = Math.round(Date.now() / 1000)
+      ret.last_sent_time = Number(member.lastSpeakTime || date)
+      ret.join_time = Number(member.joinTime || date)
+      return ret
     } else {
       throw `群成员${payload.user_id}不存在`
     }