diff --git a/td/generate/scheme/td_api.tl b/td/generate/scheme/td_api.tl
index 2c82c4857..0732cff2c 100644
--- a/td/generate/scheme/td_api.tl
+++ b/td/generate/scheme/td_api.tl
@@ -7408,6 +7408,13 @@ addMessageReaction chat_id:int53 message_id:int53 reaction_type:ReactionType is_
 //@reaction_type Type of the reaction to remove
 removeMessageReaction chat_id:int53 message_id:int53 reaction_type:ReactionType = Ok;
 
+//@description Sets reactions on a message; for bots only
+//@chat_id Identifier of the chat to which the message belongs
+//@message_id Identifier of the message
+//@reaction_types Types of the reaction to set
+//@is_big Pass true if the reactions are added with a big animation
+setMessageReactions chat_id:int53 message_id:int53 reaction_types:vector<ReactionType> is_big:Bool = Ok;
+
 //@description Returns reactions added for a message, along with their sender
 //@chat_id Identifier of the chat to which the message belongs
 //@message_id Identifier of the message
diff --git a/td/telegram/MessageReaction.cpp b/td/telegram/MessageReaction.cpp
index 865d02b94..dcfc340d1 100644
--- a/td/telegram/MessageReaction.cpp
+++ b/td/telegram/MessageReaction.cpp
@@ -876,6 +876,19 @@ void send_message_reaction(Td *td, MessageFullId message_full_id, vector<Reactio
       ->send(message_full_id, std::move(reaction_types), is_big, add_to_recent);
 }
 
+void set_message_reactions(Td *td, MessageFullId message_full_id, vector<ReactionType> reaction_types, bool is_big,
+                           Promise<Unit> &&promise) {
+  if (!td->messages_manager_->have_message_force(message_full_id, "set_message_reactions")) {
+    return promise.set_error(Status::Error(400, "Message not found"));
+  }
+  for (const auto &reaction_type : reaction_types) {
+    if (reaction_type.is_empty()) {
+      return promise.set_error(Status::Error(400, "Invalid reaction type specified"));
+    }
+  }
+  send_message_reaction(td, message_full_id, std::move(reaction_types), is_big, false, std::move(promise));
+}
+
 void get_message_added_reactions(Td *td, MessageFullId message_full_id, ReactionType reaction_type, string offset,
                                  int32 limit, Promise<td_api::object_ptr<td_api::addedReactions>> &&promise) {
   if (!td->messages_manager_->have_message_force(message_full_id, "get_message_added_reactions")) {
diff --git a/td/telegram/MessageReaction.h b/td/telegram/MessageReaction.h
index 67e0c5a2f..9562ea47e 100644
--- a/td/telegram/MessageReaction.h
+++ b/td/telegram/MessageReaction.h
@@ -216,6 +216,9 @@ void reload_message_reactions(Td *td, DialogId dialog_id, vector<MessageId> &&me
 void send_message_reaction(Td *td, MessageFullId message_full_id, vector<ReactionType> reaction_types, bool is_big,
                            bool add_to_recent, Promise<Unit> &&promise);
 
+void set_message_reactions(Td *td, MessageFullId message_full_id, vector<ReactionType> reaction_types, bool is_big,
+                           Promise<Unit> &&promise);
+
 void get_message_added_reactions(Td *td, MessageFullId message_full_id, ReactionType reaction_type, string offset,
                                  int32 limit, Promise<td_api::object_ptr<td_api::addedReactions>> &&promise);
 
diff --git a/td/telegram/Td.cpp b/td/telegram/Td.cpp
index 8ecc6c406..cd4733167 100644
--- a/td/telegram/Td.cpp
+++ b/td/telegram/Td.cpp
@@ -5489,6 +5489,13 @@ void Td::on_request(uint64 id, const td_api::removeMessageReaction &request) {
                                              ReactionType(request.reaction_type_), std::move(promise));
 }
 
+void Td::on_request(uint64 id, const td_api::setMessageReactions &request) {
+  CHECK_IS_BOT();
+  CREATE_OK_REQUEST_PROMISE();
+  set_message_reactions(this, {DialogId(request.chat_id_), MessageId(request.message_id_)},
+                        ReactionType::get_reaction_types(request.reaction_types_), request.is_big_, std::move(promise));
+}
+
 void Td::on_request(uint64 id, td_api::getMessageAddedReactions &request) {
   CHECK_IS_USER();
   CLEAN_INPUT_STRING(request.offset_);
diff --git a/td/telegram/Td.h b/td/telegram/Td.h
index 8d2c6325d..8f7ab776d 100644
--- a/td/telegram/Td.h
+++ b/td/telegram/Td.h
@@ -747,6 +747,8 @@ class Td final : public Actor {
 
   void on_request(uint64 id, const td_api::removeMessageReaction &request);
 
+  void on_request(uint64 id, const td_api::setMessageReactions &request);
+
   void on_request(uint64 id, td_api::getMessageAddedReactions &request);
 
   void on_request(uint64 id, const td_api::setDefaultReactionType &request);
diff --git a/td/telegram/cli.cpp b/td/telegram/cli.cpp
index 5809c5009..1186d2b74 100644
--- a/td/telegram/cli.cpp
+++ b/td/telegram/cli.cpp
@@ -2778,6 +2778,14 @@ class CliClient final : public Actor {
       string reaction;
       get_args(args, chat_id, message_id, reaction);
       send_request(td_api::make_object<td_api::removeMessageReaction>(chat_id, message_id, as_reaction_type(reaction)));
+    } else if (op == "reactbot" || op == "reactbotbig") {
+      ChatId chat_id;
+      MessageId message_id;
+      string reactions;
+      get_args(args, chat_id, message_id, reactions);
+      auto reaction_types = transform(autosplit_str(reactions), as_reaction_type);
+      send_request(td_api::make_object<td_api::setMessageReactions>(chat_id, message_id, std::move(reaction_types),
+                                                                    op == "reactbotbig"));
     } else if (op == "gmars") {
       ChatId chat_id;
       MessageId message_id;