diff --git a/td/generate/scheme/td_api.tl b/td/generate/scheme/td_api.tl
index c8e69c9df..41102e7f3 100644
--- a/td/generate/scheme/td_api.tl
+++ b/td/generate/scheme/td_api.tl
@@ -4931,8 +4931,12 @@ messageLink link:string is_public:Bool = MessageLink;
 messageLinkInfo is_public:Bool chat_id:int53 message_thread_id:int53 message:message media_timestamp:int32 for_album:Bool = MessageLinkInfo;
 
 
-//@description Represents a viewer of a story @user_id User identifier of the viewer @view_date Approximate point in time (Unix timestamp) when the story was viewed
-storyViewer user_id:int53 view_date:int32 = StoryViewer;
+//@description Represents a viewer of a story
+//@user_id User identifier of the viewer
+//@view_date Approximate point in time (Unix timestamp) when the story was viewed
+//@block_list Block list to which the user is added; may be null if none
+//@chosen_reaction_type Type of the reaction that was chosen by the user; may be null if none
+storyViewer user_id:int53 view_date:int32 block_list:BlockList chosen_reaction_type:ReactionType = StoryViewer;
 
 //@description Represents a list of story viewers @viewers List of story viewers
 storyViewers viewers:vector<storyViewer> = StoryViewers;
diff --git a/td/telegram/ReactionType.cpp b/td/telegram/ReactionType.cpp
index fd9fdb48d..c273f9c0b 100644
--- a/td/telegram/ReactionType.cpp
+++ b/td/telegram/ReactionType.cpp
@@ -95,7 +95,9 @@ telegram_api::object_ptr<telegram_api::Reaction> ReactionType::get_input_reactio
 }
 
 td_api::object_ptr<td_api::ReactionType> ReactionType::get_reaction_type_object() const {
-  CHECK(!is_empty());
+  if (is_empty()) {
+    return nullptr;
+  }
   if (is_custom_reaction()) {
     return td_api::make_object<td_api::reactionTypeCustomEmoji>(get_custom_emoji_id(reaction_));
   }
diff --git a/td/telegram/StoryInteractionInfo.cpp b/td/telegram/StoryInteractionInfo.cpp
index ed7b1e24d..f82953be8 100644
--- a/td/telegram/StoryInteractionInfo.cpp
+++ b/td/telegram/StoryInteractionInfo.cpp
@@ -49,11 +49,15 @@ void StoryInteractionInfo::add_dependencies(Dependencies &dependencies) const {
   }
 }
 
-void StoryInteractionInfo::set_recent_viewer_user_ids(vector<UserId> &&user_ids) {
+bool StoryInteractionInfo::set_recent_viewer_user_ids(vector<UserId> &&user_ids) {
   if (user_ids.size() > MAX_RECENT_VIEWERS) {
     user_ids.resize(MAX_RECENT_VIEWERS);
   }
-  recent_viewer_user_ids_ = std::move(user_ids);
+  if (recent_viewer_user_ids_ != user_ids) {
+    recent_viewer_user_ids_ = std::move(user_ids);
+    return true;
+  }
+  return false;
 }
 
 bool StoryInteractionInfo::definitely_has_no_user(UserId user_id) const {
diff --git a/td/telegram/StoryInteractionInfo.h b/td/telegram/StoryInteractionInfo.h
index 6963f20e5..9d5c7da33 100644
--- a/td/telegram/StoryInteractionInfo.h
+++ b/td/telegram/StoryInteractionInfo.h
@@ -54,7 +54,7 @@ class StoryInteractionInfo {
 
   bool definitely_has_no_user(UserId user_id) const;
 
-  void set_recent_viewer_user_ids(vector<UserId> &&user_ids);
+  bool set_recent_viewer_user_ids(vector<UserId> &&user_ids);
 
   td_api::object_ptr<td_api::storyInteractionInfo> get_story_interaction_info_object(Td *td) const;
 
diff --git a/td/telegram/StoryManager.cpp b/td/telegram/StoryManager.cpp
index bf2e20ccf..83b07df44 100644
--- a/td/telegram/StoryManager.cpp
+++ b/td/telegram/StoryManager.cpp
@@ -2341,12 +2341,12 @@ void StoryManager::get_story_viewers(StoryId story_id, const td_api::storyViewer
     offset_date = offset->view_date_;
     offset_user_id = offset->user_id_;
   }
-  StoryViewer offset_viewer{UserId(offset_user_id), offset_date};
+  bool is_first = offset_user_id <= 0 && offset_date <= 0;
 
   auto query_promise = PromiseCreator::lambda(
-      [actor_id = actor_id(this), story_id, offset_viewer, promise = std::move(promise)](
+      [actor_id = actor_id(this), story_id, is_first, promise = std::move(promise)](
           Result<telegram_api::object_ptr<telegram_api::stories_storyViewsList>> result) mutable {
-        send_closure(actor_id, &StoryManager::on_get_story_viewers, story_id, offset_viewer, std::move(result),
+        send_closure(actor_id, &StoryManager::on_get_story_viewers, story_id, is_first, std::move(result),
                      std::move(promise));
       });
 
@@ -2355,8 +2355,7 @@ void StoryManager::get_story_viewers(StoryId story_id, const td_api::storyViewer
 }
 
 void StoryManager::on_get_story_viewers(
-    StoryId story_id, StoryViewer offset,
-    Result<telegram_api::object_ptr<telegram_api::stories_storyViewsList>> r_view_list,
+    StoryId story_id, bool is_first, Result<telegram_api::object_ptr<telegram_api::stories_storyViewsList>> r_view_list,
     Promise<td_api::object_ptr<td_api::storyViewers>> &&promise) {
   G()->ignore_result_if_closing(r_view_list);
   if (r_view_list.is_error()) {
@@ -2382,10 +2381,14 @@ void StoryManager::on_get_story_viewers(
 
   StoryViewers story_viewers(std::move(view_list->views_));
   if (story->content_ != nullptr) {
+    bool is_changed = false;
     if (story->interaction_info_.set_view_count(view_list->count_)) {
-      if (offset.is_empty()) {
-        story->interaction_info_.set_recent_viewer_user_ids(story_viewers.get_user_ids());
-      }
+      is_changed = true;
+    }
+    if (is_first && story->interaction_info_.set_recent_viewer_user_ids(story_viewers.get_user_ids())) {
+      is_changed = true;
+    }
+    if (is_changed) {
       on_story_changed(story_full_id, story, true, true);
     }
   }
diff --git a/td/telegram/StoryManager.h b/td/telegram/StoryManager.h
index 5cb52a827..93c8cb999 100644
--- a/td/telegram/StoryManager.h
+++ b/td/telegram/StoryManager.h
@@ -522,7 +522,7 @@ class StoryManager final : public Actor {
 
   void set_story_stealth_mode(StoryStealthMode stealth_mode);
 
-  void on_get_story_viewers(StoryId story_id, StoryViewer offset,
+  void on_get_story_viewers(StoryId story_id, bool is_first,
                             Result<telegram_api::object_ptr<telegram_api::stories_storyViewsList>> r_view_list,
                             Promise<td_api::object_ptr<td_api::storyViewers>> &&promise);
 
diff --git a/td/telegram/StoryViewer.cpp b/td/telegram/StoryViewer.cpp
index d2498acc0..9dc22cf4a 100644
--- a/td/telegram/StoryViewer.cpp
+++ b/td/telegram/StoryViewer.cpp
@@ -6,6 +6,7 @@
 //
 #include "td/telegram/StoryViewer.h"
 
+#include "td/telegram/BlockListId.h"
 #include "td/telegram/ContactsManager.h"
 
 #include "td/utils/algorithm.h"
@@ -14,22 +15,24 @@
 namespace td {
 
 td_api::object_ptr<td_api::storyViewer> StoryViewer::get_story_viewer_object(ContactsManager *contacts_manager) const {
+  auto block_list_id = BlockListId(is_blocked_, is_blocked_for_stories_);
   return td_api::make_object<td_api::storyViewer>(
-      contacts_manager->get_user_id_object(user_id_, "get_story_viewer_object"), date_);
+      contacts_manager->get_user_id_object(user_id_, "get_story_viewer_object"), date_,
+      block_list_id.get_block_list_object(), reaction_type_.get_reaction_type_object());
 }
 
 StringBuilder &operator<<(StringBuilder &string_builder, const StoryViewer &viewer) {
-  return string_builder << '[' << viewer.user_id_ << " at " << viewer.date_ << ']';
+  return string_builder << '[' << viewer.user_id_ << " with " << viewer.reaction_type_ << " at " << viewer.date_ << ']';
 }
 
 StoryViewers::StoryViewers(vector<telegram_api::object_ptr<telegram_api::storyView>> &&story_views) {
   for (auto &story_view : story_views) {
-    UserId user_id(story_view->user_id_);
+    story_viewers_.emplace_back(std::move(story_view));
+    auto user_id = story_viewers_.back().get_user_id();
     if (!user_id.is_valid()) {
-      LOG(ERROR) << "Receive " << user_id << " as story viewer";
-      continue;
+      LOG(ERROR) << "Receive invalid " << user_id << " as a viewer of a story";
+      story_viewers_.pop_back();
     }
-    story_viewers_.emplace_back(user_id, story_view->date_);
   }
 }
 
diff --git a/td/telegram/StoryViewer.h b/td/telegram/StoryViewer.h
index 2685680e7..e2b442072 100644
--- a/td/telegram/StoryViewer.h
+++ b/td/telegram/StoryViewer.h
@@ -6,6 +6,7 @@
 //
 #pragma once
 
+#include "td/telegram/ReactionType.h"
 #include "td/telegram/td_api.h"
 #include "td/telegram/telegram_api.h"
 #include "td/telegram/UserId.h"
@@ -20,21 +21,25 @@ class ContactsManager;
 class StoryViewer {
   UserId user_id_;
   int32 date_ = 0;
+  bool is_blocked_ = false;
+  bool is_blocked_for_stories_ = false;
+  ReactionType reaction_type_;
 
   friend StringBuilder &operator<<(StringBuilder &string_builder, const StoryViewer &viewer);
 
  public:
-  StoryViewer(UserId user_id, int32 date) : user_id_(user_id), date_(td::max(date, static_cast<int32>(0))) {
+  StoryViewer(telegram_api::object_ptr<telegram_api::storyView> &&story_view)
+      : user_id_(story_view->user_id_)
+      , date_(td::max(story_view->date_, static_cast<int32>(0)))
+      , is_blocked_(story_view->blocked_)
+      , is_blocked_for_stories_(story_view->blocked_my_stories_from_)
+      , reaction_type_(story_view->reaction_) {
   }
 
   UserId get_user_id() const {
     return user_id_;
   }
 
-  bool is_empty() const {
-    return user_id_ == UserId() && date_ == 0;
-  }
-
   td_api::object_ptr<td_api::storyViewer> get_story_viewer_object(ContactsManager *contacts_manager) const;
 };
 
diff --git a/td/telegram/cli.cpp b/td/telegram/cli.cpp
index 11ae55e02..18b992468 100644
--- a/td/telegram/cli.cpp
+++ b/td/telegram/cli.cpp
@@ -4155,7 +4155,8 @@ class CliClient final : public Actor {
       UserId offset_user_id;
       get_args(args, story_id, limit, offset_date, offset_user_id);
       send_request(td_api::make_object<td_api::getStoryViewers>(
-          story_id, td_api::make_object<td_api::storyViewer>(offset_user_id, offset_date), as_limit(limit)));
+          story_id, td_api::make_object<td_api::storyViewer>(offset_user_id, offset_date, nullptr, nullptr),
+          as_limit(limit)));
     } else if (op == "rst") {
       ChatId story_sender_chat_id;
       StoryId story_id;