diff --git a/td/telegram/ContactsManager.cpp b/td/telegram/ContactsManager.cpp
index 3f8a70988..bf7a8d2af 100644
--- a/td/telegram/ContactsManager.cpp
+++ b/td/telegram/ContactsManager.cpp
@@ -11875,6 +11875,9 @@ void ContactsManager::speculative_add_channel_participants(ChannelId channel_id,
       channel_full->bot_user_ids.push_back(user_id);
       channel_full->need_save_to_database = true;
       reload_channel_full(channel_id, Promise<Unit>(), "speculative_add_channel_participants");
+
+      send_closure_later(G()->messages_manager(), &MessagesManager::on_dialog_bots_updated, DialogId(channel_id),
+                         channel_full->bot_user_ids, false);
     }
   }
   if (is_participants_cache_changed) {
@@ -11912,6 +11915,9 @@ void ContactsManager::speculative_delete_channel_participant(ChannelId channel_i
     if (channel_full != nullptr && td::remove(channel_full->bot_user_ids, deleted_user_id)) {
       channel_full->need_save_to_database = true;
       update_channel_full(channel_full, channel_id);
+
+      send_closure_later(G()->messages_manager(), &MessagesManager::on_dialog_bots_updated, DialogId(channel_id),
+                         channel_full->bot_user_ids, false);
     }
   }
 
@@ -12049,10 +12055,16 @@ void ContactsManager::speculative_add_channel_user(ChannelId channel_id, UserId
         channel_full->bot_user_ids.push_back(user_id);
         channel_full->need_save_to_database = true;
         reload_channel_full(channel_id, Promise<Unit>(), "speculative_add_channel_user");
+
+        send_closure_later(G()->messages_manager(), &MessagesManager::on_dialog_bots_updated, DialogId(channel_id),
+                           channel_full->bot_user_ids, false);
       }
     } else {
       if (td::remove(channel_full->bot_user_ids, user_id)) {
         channel_full->need_save_to_database = true;
+
+        send_closure_later(G()->messages_manager(), &MessagesManager::on_dialog_bots_updated, DialogId(channel_id),
+                           channel_full->bot_user_ids, false);
       }
     }
   }