diff --git a/server/gameserver/roommgr.cc b/server/gameserver/roommgr.cc
index ce9518d..d0baab0 100644
--- a/server/gameserver/roommgr.cc
+++ b/server/gameserver/roommgr.cc
@@ -125,6 +125,10 @@ void RoomMgr::Update(int delta_time)
 
 void RoomMgr::_CMJoin(f8::MsgHdr& hdr, const cs::CMJoin& msg)
 {
+    if (msg.proto_version() < 2021073001) {
+        JoinErrorHandle(msg, 6, hdr.socket_handle);
+        return;
+    }
     if (IsLimitJoin()) {
         JoinErrorHandle(msg, 2, hdr.socket_handle);
         return;
diff --git a/server/tools/protobuild/cs_proto.proto b/server/tools/protobuild/cs_proto.proto
index 1fbbf88..cf5a591 100755
--- a/server/tools/protobuild/cs_proto.proto
+++ b/server/tools/protobuild/cs_proto.proto
@@ -50,7 +50,7 @@ package cs;
 //常量
 enum Constant_e
 {
-    ProtoVersion = 2020081401; //系统版本
+    ProtoVersion = 2021073001; //系统版本
 }
 
 //心跳