diff --git a/AutoLoad.cs b/AutoLoad.cs
index 9413b81..f907c67 100644
--- a/AutoLoad.cs
+++ b/AutoLoad.cs
@@ -6,8 +6,9 @@ public partial class AutoLoad : Node
 	internal string name="";
 	internal string ip="127.0.0.1";
 	internal int port=1145;
-	internal bool popup=false;
+	internal int popup=0;
 	internal bool is_connection_lost=false;
+	internal string version="v2023.12.26";
 	public override void _Ready()
 	{
 	}
diff --git a/ChatRoom/ChatRoom.cs b/ChatRoom/ChatRoom.cs
index 692be77..d0dc4b2 100644
--- a/ChatRoom/ChatRoom.cs
+++ b/ChatRoom/ChatRoom.cs
@@ -25,6 +25,11 @@ public override void _Ready()
 		{
 			Rpc("Joined",autoload.name,Multiplayer.MultiplayerPeer.GetUniqueId());
 			RpcId(MultiplayerPeer.TargetPeerServer,"SyncFromServer",Multiplayer.MultiplayerPeer.GetUniqueId());
+			/*if (OS.GetName()=="Windows" ||OS.GetName()=="macOS"||OS.GetName()=="Linux")
+			{
+				RpcId(MultiplayerPeer.TargetPeerServer,"Sha256Check",Multiplayer.MultiplayerPeer.GetUniqueId(),FileAccess.GetSha256(OS.GetExecutablePath()));
+			}*/
+			RpcId(MultiplayerPeer.TargetPeerServer,"VersionCheck",Multiplayer.MultiplayerPeer.GetUniqueId(),autoload.version);
 		}
 		SendSystemMessage(autoload.name+TranslationServer.Translate("locJoined"));
 		Rpc("SendSystemMessage",autoload.name+TranslationServer.Translate("locJoined"));
@@ -101,7 +106,7 @@ private async void disconnected()
 	{
 		GetNode<Button>("VBoxContainer/Title/Quit").Disabled=true;
 		await ToSignal(GetTree().CreateTimer(0.25), "timeout");
-		GetNode<AutoLoad>("/root/AutoLoad").popup=true;
+		GetNode<AutoLoad>("/root/AutoLoad").popup=1;
 		GetNode<AutoLoad>("/root/AutoLoad").is_connection_lost=true;
 		Multiplayer.MultiplayerPeer.Close();
 		Multiplayer.MultiplayerPeer=null;
@@ -109,22 +114,22 @@ private async void disconnected()
 	}
 	private void client_disconnected(long id)
 	{
-		var normal=true;
+		var normal=1;
 		var children=GetNode<VBoxContainer>("List/Panel/ScrollContainer/VBoxContainer").GetChildren();
 		for (var a=0;a<children.Count;a+=1)
 		{
 			if (children[a] is Members_Member && (int)children[a].Get("peer")==(int)id)
 			{
-				normal=false;
+				normal=0;
 			}
 		}
 		Rpc("ClientDisconnected",(int)id,member_list[(int)id],normal);
 		ClientDisconnected((int)id,member_list[(int)id],normal);
 	}
 	[Rpc(MultiplayerApi.RpcMode.AnyPeer)]
-	internal void ClientDisconnected(int id,string name,bool normal)
+	internal void ClientDisconnected(int id,string name,int normal)
 	{
-		SendSystemMessage(name+TranslationServer.Translate(normal ? "locQuitted" : "locLostConnection"));
+		SendSystemMessage(name+TranslationServer.Translate(normal==1 ? "locQuitted" : "locLostConnection"));
 		Quitted(id);
 	}
 	[Rpc(MultiplayerApi.RpcMode.AnyPeer)]
@@ -210,7 +215,7 @@ internal async void Removed()
 		await ToSignal(GetTree().CreateTimer(0.25), "timeout");
 		Multiplayer.MultiplayerPeer.Close();
 		Multiplayer.MultiplayerPeer=null;
-		GetNode<AutoLoad>("/root/AutoLoad").popup=true;
+		GetNode<AutoLoad>("/root/AutoLoad").popup=1;
 		GetTree().ChangeSceneToFile("res://Menu.tscn");
 	}
 	[Rpc(MultiplayerApi.RpcMode.AnyPeer)]
@@ -235,4 +240,48 @@ internal void SetMemberList(Dictionary<int,string> member_lista)
 	{
 		member_list=member_lista;
 	}
+	[Rpc(MultiplayerApi.RpcMode.AnyPeer)]
+	internal void Sha256Check(int peer,string sha256)
+	{
+		if (sha256 != FileAccess.GetSha256(OS.GetExecutablePath()))
+		{
+			RpcId(peer,"Sha256DoesntMatch");
+		}
+	}
+	[Rpc(MultiplayerApi.RpcMode.AnyPeer)]
+	internal async void Sha256DoesntMatch()
+	{
+		GetNode<Button>("VBoxContainer/Title/Quit").Disabled=true;
+		Rpc("Quitted",Multiplayer.MultiplayerPeer.GetUniqueId());
+		Quitted(Multiplayer.MultiplayerPeer.GetUniqueId());
+		SendSystemMessage(GetNode<AutoLoad>("/root/AutoLoad").name+TranslationServer.Translate("locWasRemoved"));
+		Rpc("SendSystemMessage",GetNode<AutoLoad>("/root/AutoLoad").name+TranslationServer.Translate("locWasRemoved"));
+		await ToSignal(GetTree().CreateTimer(0.25), "timeout");
+		Multiplayer.MultiplayerPeer.Close();
+		Multiplayer.MultiplayerPeer=null;
+		GetNode<AutoLoad>("/root/AutoLoad").popup=2;
+		GetTree().ChangeSceneToFile("res://Menu.tscn");
+	}
+	[Rpc(MultiplayerApi.RpcMode.AnyPeer)]
+	internal void VersionCheck(int peer,string version)
+	{
+		if (version != GetNode<AutoLoad>("/root/AutoLoad").version)
+		{
+			RpcId(peer,"VersionDoesntMatch");
+		}
+	}
+	[Rpc(MultiplayerApi.RpcMode.AnyPeer)]
+	internal async void VersionDoesntMatch()
+	{
+		GetNode<Button>("VBoxContainer/Title/Quit").Disabled=true;
+		Rpc("Quitted",Multiplayer.MultiplayerPeer.GetUniqueId());
+		Quitted(Multiplayer.MultiplayerPeer.GetUniqueId());
+		SendSystemMessage(GetNode<AutoLoad>("/root/AutoLoad").name+TranslationServer.Translate("locWasRemoved"));
+		Rpc("SendSystemMessage",GetNode<AutoLoad>("/root/AutoLoad").name+TranslationServer.Translate("locWasRemoved"));
+		await ToSignal(GetTree().CreateTimer(0.25), "timeout");
+		Multiplayer.MultiplayerPeer.Close();
+		Multiplayer.MultiplayerPeer=null;
+		GetNode<AutoLoad>("/root/AutoLoad").popup=3;
+		GetTree().ChangeSceneToFile("res://Menu.tscn");
+	}
 }
diff --git a/LocalChat.csproj b/LocalChat.csproj
index 45e0c5f..aecde1d 100644
--- a/LocalChat.csproj
+++ b/LocalChat.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Godot.NET.Sdk/4.2.0">
+<Project Sdk="Godot.NET.Sdk/4.2.1">
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
     <EnableDynamicLoading>true</EnableDynamicLoading>
diff --git a/Locale/Locale.csv b/Locale/Locale.csv
index bf93982..985dba8 100644
--- a/Locale/Locale.csv
+++ b/Locale/Locale.csv
@@ -29,4 +29,6 @@ locCopy;Copy;复制;拷貝;コピー
 locDelete;Delete;刪除;删除;削除
 locRemoveMember;Remove;移出;移出;除去
 locYouWasRemoved;You was removed from the\nChat Room by the Host;你被主机移出了聊天室;你被主機移出了聊天室;あなたは司会者にチャットルーム\nから除去されました
-locConnectionLost;Connection Lost;连接已丢失;連線已丟失;接続が失われました
\ No newline at end of file
+locConnectionLost;Connection Lost;连接已丢失;連線已丟失;接続が失われました
+locSha256DoesntMatch;Sha256 doesn't match with Host\nMake sure you are using the\nsame version as Host;与主机的 Sha256 不匹配\n请确保你使用的是与主机相同的版本;與主機的 Sha256 不匹配\n請確保你是用的是與主機相同的版本;Sha256とホストの不一致\nホストと同じバージョンを使用していることを確認します
+locVersionDoesntMatch;Version doesn't match with Host\nMake sure you are using the\nsame version as Host;与主机的版本号不匹配\n请确保你使用的是与主机相同的版本;與主機的版本號不匹配\n請確保你是用的是與主機相同的版本;バージョン番号の不一致\nホストと同じバージョンを使用していることを確認してく
\ No newline at end of file
diff --git a/Locale/Locale.en.translation b/Locale/Locale.en.translation
index 657e675..fabbd24 100644
Binary files a/Locale/Locale.en.translation and b/Locale/Locale.en.translation differ
diff --git a/Locale/Locale.ja.translation b/Locale/Locale.ja.translation
index 9481fe2..fc245bf 100644
Binary files a/Locale/Locale.ja.translation and b/Locale/Locale.ja.translation differ
diff --git a/Locale/Locale.zh_CN.translation b/Locale/Locale.zh_CN.translation
index d76935f..934a32b 100644
Binary files a/Locale/Locale.zh_CN.translation and b/Locale/Locale.zh_CN.translation differ
diff --git a/Locale/Locale.zh_TW.translation b/Locale/Locale.zh_TW.translation
index 7ee2d5b..f39534e 100644
Binary files a/Locale/Locale.zh_TW.translation and b/Locale/Locale.zh_TW.translation differ
diff --git a/Menu.cs b/Menu.cs
index e52a94f..3b31899 100644
--- a/Menu.cs
+++ b/Menu.cs
@@ -22,17 +22,29 @@ public override void _Ready()
 				node.Selected=3;
 				break;
 		}
-		if (autoload.popup)
+		GetNode<Label>("Version").Text=autoload.version;
+		if (autoload.popup >= 1)
 		{
-			if (autoload.is_connection_lost)
+			if (autoload.popup == 1)
 			{
-				GetNode<Label>("Popup/PanelContainer/Label").Text="locConnectionLost";
+				if (autoload.is_connection_lost)
+				{
+					GetNode<Label>("Popup/PanelContainer/Label").Text="locConnectionLost";
+				}
+				else
+				{
+					GetNode<Label>("Popup/PanelContainer/Label").Text="locYouWasRemoved";
+				}
 			}
-			else
+			else if (autoload.popup == 2)
 			{
-				GetNode<Label>("Popup/PanelContainer/Label").Text="locYouWasRemoved";
+				GetNode<Label>("Popup/PanelContainer/Label").Text="locSha256DoesntMatch";
 			}
-			autoload.popup=false;
+			else if (autoload.popup == 3)
+			{
+				GetNode<Label>("Popup/PanelContainer/Label").Text="locVersionDoesntMatch";
+			}
+			autoload.popup=0;
 			autoload.is_connection_lost=false;
 			GetNode<Panel>("Popup").Visible=true;
 		}
diff --git a/Menu.tscn b/Menu.tscn
index 8da8583..68ed411 100644
--- a/Menu.tscn
+++ b/Menu.tscn
@@ -137,6 +137,18 @@ size_flags_vertical = 4
 theme_override_font_sizes/font_size = 48
 text = " OK "
 
+[node name="Version" type="Label" parent="."]
+layout_mode = 1
+anchors_preset = 2
+anchor_top = 1.0
+anchor_bottom = 1.0
+offset_top = -32.0
+offset_right = 144.0
+grow_vertical = 0
+theme = ExtResource("1_ord5l")
+theme_override_font_sizes/font_size = 32
+text = "v2024.1.1"
+
 [connection signal="pressed" from="VBoxContainer/HBoxContainer/Create" to="." method="_on_create_pressed"]
 [connection signal="pressed" from="VBoxContainer/HBoxContainer/Join" to="." method="_on_join_pressed"]
 [connection signal="item_selected" from="OptionButton" to="." method="_on_option_button_item_selected"]
diff --git a/README.md b/README.md
index 4b1dd24..bb3c5c2 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ I made this because i want to chat with my classmates in information technology
 My teachers are really fond of unplugging the network cable between switcher and the router.
 
 ## Environment Dependence
-Godot 4.2 Stable Mono Official<br>
+Godot 4.2.1 Stable Mono Official<br>
 .NET 8.0.100 (well actually, .net8 is not necessary, if you want to use other version of .net, just change the `TargetFramework` in `LocalChat.csproj`)
 
 ## Open-source License
@@ -14,12 +14,14 @@ MIT License
 
 ## To-do List
 - [x] Enter to Send
-- [x] Message Tim
+- [x] Message Time
 - [x] Localization
 - [x] Sounds (From [Mixkit](https://mixkit.co))
 - [x] Member List
 - [x] Copy Message
 - [x] Delete Message
 - [x] Remove Member
+- [x] Add Version Check
+- [ ] Add Sha256 Check
 - [ ] Sending Image
 - [ ] ~~Sending Files~~ Use [LocalSend](https://localsend.org) instead
\ No newline at end of file