diff --git a/td/telegram/MessageContent.cpp b/td/telegram/MessageContent.cpp
index 9ce184579..9f4117c73 100644
--- a/td/telegram/MessageContent.cpp
+++ b/td/telegram/MessageContent.cpp
@@ -453,7 +453,7 @@ class MessageChatSetTtl final : public MessageContent {
 
 class MessageUnsupported final : public MessageContent {
  public:
-  static constexpr int32 CURRENT_VERSION = 11;
+  static constexpr int32 CURRENT_VERSION = 12;
   int32 version = CURRENT_VERSION;
 
   MessageUnsupported() = default;