diff --git a/td/telegram/MessageContent.cpp b/td/telegram/MessageContent.cpp
index 80716403..58ff673d 100644
--- a/td/telegram/MessageContent.cpp
+++ b/td/telegram/MessageContent.cpp
@@ -426,7 +426,7 @@ class MessageChatSetTtl : public MessageContent {
 
 class MessageUnsupported : public MessageContent {
  public:
-  static constexpr int32 CURRENT_VERSION = 3;
+  static constexpr int32 CURRENT_VERSION = 4;
   int32 version = CURRENT_VERSION;
 
   MessageUnsupported() = default;