diff --git a/example/cpp/td_example.cpp b/example/cpp/td_example.cpp
index 1fc8ef1d..dbff69e4 100644
--- a/example/cpp/td_example.cpp
+++ b/example/cpp/td_example.cpp
@@ -5,7 +5,6 @@
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 //
 #include <td/telegram/Client.h>
-#include <td/telegram/Log.h>
 #include <td/telegram/td_api.h>
 #include <td/telegram/td_api.hpp>
 
@@ -54,7 +53,7 @@ namespace td_api = td::td_api;
 class TdExample {
  public:
   TdExample() {
-    td::Log::set_verbosity_level(1);
+    td::Client::execute({0, td_api::make_object<td_api::setLogVerbosityLevel>(1)});
     client_ = std::make_unique<td::Client>();
   }
 
diff --git a/example/cpp/tdjson_example.cpp b/example/cpp/tdjson_example.cpp
index ba7100f1..cffb1413 100644
--- a/example/cpp/tdjson_example.cpp
+++ b/example/cpp/tdjson_example.cpp
@@ -12,6 +12,9 @@
 // the main event cycle, which should be essentially the same for all languages.
 
 int main() {
+  // disable TDLib logging
+  td_json_client_execute(nullptr, "{\"@type\":\"setLogVerbosityLevel\", \"new_verbosity_level\":0}");
+
   void *client = td_json_client_create();
   // somehow share the client with other threads, which will be able to send requests via td_json_client_send
 
diff --git a/td/telegram/Log.h b/td/telegram/Log.h
index 747c8f7e..17f1b696 100644
--- a/td/telegram/Log.h
+++ b/td/telegram/Log.h
@@ -20,6 +20,8 @@ namespace td {
 /**
  * Interface for managing the internal logging of TDLib.
  * By default TDLib writes logs to stderr or an OS specific log and uses a verbosity level of 5.
+ * These functions are deprecated since TDLib 1.4.0 in favor of the td::td_api::setLogVerbosityLevel,
+ * td::td_api::setLogStream and other synchronous requests for managing the intrenal TDLib logging.
  */
 class Log {
  public:
@@ -28,6 +30,7 @@ class Log {
    * By default TDLib writes logs to stderr or an OS specific log.
    * Use this method to write the log to a file instead.
    *
+   * \deprecated Use synchronous td::td_api::setLogStream request instead.
    * \param[in]  file_path Path to a file where the internal TDLib log will be written. Use an empty path to
    *                       switch back to the default logging behaviour.
    * \return True on success, or false otherwise, i.e. if the file can't be opened for writing.
@@ -38,6 +41,7 @@ class Log {
    * Sets maximum size of the file to where the internal TDLib log is written before the file will be auto-rotated.
    * Unused if log is not written to a file. Defaults to 10 MB.
    *
+   * \deprecated Use synchronous td::td_api::setLogStream request instead.
    * \param[in]  max_file_size Maximum size of the file to where the internal TDLib log is written before the file
    *                           will be auto-rotated. Should be positive.
    */
@@ -47,6 +51,7 @@ class Log {
    * Sets the verbosity level of the internal logging of TDLib.
    * By default the TDLib uses a verbosity level of 5 for logging.
    *
+   * \deprecated Use synchronous td::td_api::setLogVerbosityLevel request instead.
    * \param[in]  new_verbosity_level New value of the verbosity level for logging.
    *                                 Value 0 corresponds to fatal errors,
    *                                 value 1 corresponds to errors,
diff --git a/td/telegram/td_log.h b/td/telegram/td_log.h
index 43ca44f6..423c5c51 100644
--- a/td/telegram/td_log.h
+++ b/td/telegram/td_log.h
@@ -10,6 +10,8 @@
  * \file
  * C interface for managing the internal logging of TDLib.
  * By default TDLib writes logs to stderr or an OS specific log and uses a verbosity level of 5.
+ * These functions are deprecated since TDLib 1.4.0 in favor of the setLogVerbosityLevel, setLogStream and
+ * other synchronous requests for managing the intrenal TDLib logging.
  */
 
 #include "td/telegram/tdjson_export.h"
@@ -23,25 +25,28 @@ extern "C" {
  * By default TDLib writes logs to stderr or an OS specific log.
  * Use this method to write the log to a file instead.
  *
+ * \deprecated Use synchronous setLogStream request instead.
  * \param[in]  file_path Null-terminated path to a file where the internal TDLib log will be written.
  *                       Use an empty path to switch back to the default logging behaviour.
  * \return True 1 on success, or 0 otherwise, i.e. if the file can't be opened for writing.
  */
-TDJSON_EXPORT int td_set_log_file_path(const char *file_path);
+TDJSON_DEPRECATED_EXPORT int td_set_log_file_path(const char *file_path);
 
 /**
  * Sets maximum size of the file to where the internal TDLib log is written before the file will be auto-rotated.
  * Unused if log is not written to a file. Defaults to 10 MB.
  *
+ * \deprecated Use synchronous setLogStream request instead.
  * \param[in]  max_file_size Maximum size of the file to where the internal TDLib log is written before the file
  *                           will be auto-rotated. Should be positive.
  */
-TDJSON_EXPORT void td_set_log_max_file_size(long long max_file_size);
+TDJSON_DEPRECATED_EXPORT void td_set_log_max_file_size(long long max_file_size);
 
 /**
  * Sets the verbosity level of the internal logging of TDLib.
  * By default the TDLib uses a log verbosity level of 5.
  *
+ * \deprecated Use synchronous setLogVerbosityLevel request instead.
  * \param[in]  new_verbosity_level New value of logging verbosity level.
  *                                 Value 0 corresponds to fatal errors,
  *                                 value 1 corresponds to errors,
@@ -51,7 +56,7 @@ TDJSON_EXPORT void td_set_log_max_file_size(long long max_file_size);
  *                                 value 5 corresponds to verbose debug,
  *                                 value greater than 5 and up to 1024 can be used to enable even more logging.
  */
-TDJSON_EXPORT void td_set_log_verbosity_level(int new_verbosity_level);
+TDJSON_DEPRECATED_EXPORT void td_set_log_verbosity_level(int new_verbosity_level);
 
 /**
  * A type of callback function that will be called when a fatal error happens.