diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 255eba47..ca188efa 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -364,6 +364,7 @@
  *   - [disable_notification]: bool, defaults to false, sends the message silently. Users will receive a notification with no sound
  *   - [split_long_messages]: bool, defaults to false, split messages longer than 4096 bytes into multiple messages
  *   - [delay_between_messages]: bool, defaults to false, adds a 1sec delay/sleep between sending split messages
+ *   - [topic]: int, defaults to null, message_thread_id, unique identifier for the target message thread (topic) of the forum; for forum supergroups only
  *
  * - sampling:
  *   - handler: the wrapped handler's name
@@ -594,6 +595,7 @@ public function getConfigTreeBuilder(): TreeBuilder
                 ->booleanNode('disable_notification')->defaultNull()->end() // telegram
                 ->booleanNode('split_long_messages')->defaultFalse()->end() // telegram
                 ->booleanNode('delay_between_messages')->defaultFalse()->end() // telegram
+                ->scalarNode('topic')->defaultNull()->end() // telegram
                 ->integerNode('factor')->defaultValue(1)->min(1)->end() // sampling
                 ->arrayNode('tags') // loggly
                     ->beforeNormalization()
diff --git a/DependencyInjection/MonologExtension.php b/DependencyInjection/MonologExtension.php
index 1d47a984..974a2824 100644
--- a/DependencyInjection/MonologExtension.php
+++ b/DependencyInjection/MonologExtension.php
@@ -349,6 +349,7 @@ private function buildHandler(ContainerBuilder $container, $name, array $handler
                     $handler['disable_notification'],
                     $handler['split_long_messages'],
                     $handler['delay_between_messages'],
+                    $handler['topic'],
                 ]);
                 break;