diff --git a/back/src/Model/Group.ts b/back/src/Model/Group.ts
index c14d509f..65e15c40 100644
--- a/back/src/Model/Group.ts
+++ b/back/src/Model/Group.ts
@@ -147,9 +147,9 @@ export class Group implements Movable {
 
     join(user: User): void {
         // Broadcast on the right event
-        this.connectCallback(user, this);
         this.users.add(user);
         user.group = this;
+        this.connectCallback(user, this);
     }
 
     leave(user: User): void {
diff --git a/back/src/Services/SocketManager.ts b/back/src/Services/SocketManager.ts
index 9233811b..c396893d 100644
--- a/back/src/Services/SocketManager.ts
+++ b/back/src/Services/SocketManager.ts
@@ -38,6 +38,7 @@ import {
     SubToPusherRoomMessage,
     SetPlayerDetailsMessage,
     PlayerDetailsUpdatedMessage,
+    GroupUsersUpdateMessage,
 } from "../Messages/generated/messages_pb";
 import { User, UserSocket } from "../Model/User";
 import { ProtobufUtils } from "../Model/Websocket/ProtobufUtils";
@@ -265,8 +266,14 @@ export class SocketManager {
         if (roomPromise === undefined) {
             roomPromise = GameRoom.create(
                 roomId,
-                (user: User, group: Group) => this.joinWebRtcRoom(user, group),
-                (user: User, group: Group) => this.disConnectedUser(user, group),
+                (user: User, group: Group) => {
+                    this.joinWebRtcRoom(user, group);
+                    this.sendGroupUsersUpdateToGroupMembers(group);
+                },
+                (user: User, group: Group) => {
+                    this.disConnectedUser(user, group);
+                    this.sendGroupUsersUpdateToGroupMembers(group);
+                },
                 MINIMUM_DISTANCE,
                 GROUP_RADIUS,
                 (thing: Movable, fromZone: Zone | null, listener: ZoneSocket) =>
@@ -438,6 +445,19 @@ export class SocketManager {
         return undefined;
     }
 
+    private sendGroupUsersUpdateToGroupMembers(group: Group) {
+        const groupUserUpdateMessage = new GroupUsersUpdateMessage();
+        groupUserUpdateMessage.setGroupid(group.getId());
+        groupUserUpdateMessage.setUseridsList(group.getUsers().map((user) => user.id));
+
+        const clientMessage = new ServerToClientMessage();
+        clientMessage.setGroupusersupdatemessage(groupUserUpdateMessage);
+
+        group.getUsers().forEach((currentUser: User) => {
+            currentUser.socket.write(clientMessage);
+        });
+    }
+
     private joinWebRtcRoom(user: User, group: Group) {
         for (const otherUser of group.getUsers()) {
             if (user === otherUser) {
diff --git a/front/src/Connexion/ConnexionModels.ts b/front/src/Connexion/ConnexionModels.ts
index bf834a02..3d8893a2 100644
--- a/front/src/Connexion/ConnexionModels.ts
+++ b/front/src/Connexion/ConnexionModels.ts
@@ -47,6 +47,11 @@ export interface GroupCreatedUpdatedMessageInterface {
     groupSize: number;
 }
 
+export interface GroupUsersUpdateMessageInterface {
+    groupId: number;
+    userIds: number[];
+}
+
 export interface WebRtcDisconnectMessageInterface {
     userId: number;
 }
diff --git a/front/src/Connexion/RoomConnection.ts b/front/src/Connexion/RoomConnection.ts
index 584a1a51..95c91cd5 100644
--- a/front/src/Connexion/RoomConnection.ts
+++ b/front/src/Connexion/RoomConnection.ts
@@ -5,6 +5,7 @@ import type { UserSimplePeerInterface } from "../WebRtc/SimplePeer";
 import { ProtobufClientUtils } from "../Network/ProtobufClientUtils";
 import type {
     GroupCreatedUpdatedMessageInterface,
+    GroupUsersUpdateMessageInterface,
     MessageUserJoined,
     PlayGlobalMessageInterface,
     PositionInterface,
@@ -97,6 +98,9 @@ export class RoomConnection implements RoomConnection {
     private readonly _groupUpdateMessageStream = new Subject<GroupCreatedUpdatedMessageInterface>();
     public readonly groupUpdateMessageStream = this._groupUpdateMessageStream.asObservable();
 
+    private readonly _groupUsersUpdateMessageStream = new Subject<GroupUsersUpdateMessageInterface>();
+    public readonly groupUsersUpdateMessageStream = this._groupUsersUpdateMessageStream.asObservable();
+
     private readonly _groupDeleteMessageStream = new Subject<GroupDeleteMessageTsProto>();
     public readonly groupDeleteMessageStream = this._groupDeleteMessageStream.asObservable();
 
@@ -398,6 +402,12 @@ export class RoomConnection implements RoomConnection {
                     this._sendJitsiJwtMessageStream.next(message.sendJitsiJwtMessage);
                     break;
                 }
+                case "groupUsersUpdateMessage": {
+                    console.log("GOT GROUP USERS UPDATE MESSAGE");
+                    console.log(message.groupUsersUpdateMessage);
+                    this._groupUsersUpdateMessageStream.next(message.groupUsersUpdateMessage);
+                    break;
+                }
                 case "sendUserMessage": {
                     adminMessagesService.onSendusermessage(message.sendUserMessage);
                     break;
diff --git a/front/src/Phaser/Game/GameScene.ts b/front/src/Phaser/Game/GameScene.ts
index 274ae573..0a44cea3 100644
--- a/front/src/Phaser/Game/GameScene.ts
+++ b/front/src/Phaser/Game/GameScene.ts
@@ -1976,7 +1976,6 @@ ${escapedMessage}
     }
 
     private doShareGroupPosition(groupPositionMessage: GroupCreatedUpdatedMessageInterface) {
-        console.log(groupPositionMessage);
         //delete previous group
         this.doDeleteGroup(groupPositionMessage.groupId);
 
diff --git a/messages/protos/messages.proto b/messages/protos/messages.proto
index 8ac7bbf0..5c9c95b7 100644
--- a/messages/protos/messages.proto
+++ b/messages/protos/messages.proto
@@ -215,6 +215,11 @@ message ItemStateMessage {
   string stateJson = 2;
 }
 
+message GroupUsersUpdateMessage {
+  int32 groupId = 1;
+  repeated int32 userIds = 2;
+}
+
 message RoomJoinedMessage {
   //repeated UserJoinedMessage user = 1;
   //repeated GroupUpdateMessage group = 2;
@@ -310,6 +315,7 @@ message ServerToClientMessage {
     FollowRequestMessage followRequestMessage = 21;
     FollowConfirmationMessage followConfirmationMessage = 22;
     FollowAbortMessage followAbortMessage = 23;
+    GroupUsersUpdateMessage groupUsersUpdateMessage = 24;
   }
 }