diff --git a/src/Symfony/Component/Notifier/Bridge/Telegram/TelegramTransport.php b/src/Symfony/Component/Notifier/Bridge/Telegram/TelegramTransport.php
index 60eee07d9c5d..5b5cad8e0fb8 100644
--- a/src/Symfony/Component/Notifier/Bridge/Telegram/TelegramTransport.php
+++ b/src/Symfony/Component/Notifier/Bridge/Telegram/TelegramTransport.php
@@ -82,7 +82,7 @@ protected function doSend(MessageInterface $message): SentMessage
 
         if (!isset($options['parse_mode']) || TelegramOptions::PARSE_MODE_MARKDOWN_V2 === $options['parse_mode']) {
             $options['parse_mode'] = TelegramOptions::PARSE_MODE_MARKDOWN_V2;
-            $options['text'] = str_replace('.', '\.', $message->getSubject());
+            $options['text'] = preg_replace('/([_*\[\]()~`>#+\-=|{}.!])/', '\\\\$1', $message->getSubject());
         }
 
         $response = $this->client->request('POST', $endpoint, [
diff --git a/src/Symfony/Component/Notifier/Bridge/Telegram/Tests/TelegramTransportTest.php b/src/Symfony/Component/Notifier/Bridge/Telegram/Tests/TelegramTransportTest.php
index 2b0cbbdf17c4..718f566b0c24 100644
--- a/src/Symfony/Component/Notifier/Bridge/Telegram/Tests/TelegramTransportTest.php
+++ b/src/Symfony/Component/Notifier/Bridge/Telegram/Tests/TelegramTransportTest.php
@@ -186,7 +186,7 @@ public function testSendWithChannelOverride()
         $this->assertEquals('telegram://api.telegram.org?channel=defaultChannel', $sentMessage->getTransport());
     }
 
-    public function testSendWithMarkdownShouldEscapeDots()
+    public function testSendWithMarkdownShouldEscapeSpecialCharacters()
     {
         $response = $this->createMock(ResponseInterface::class);
         $response->expects($this->exactly(2))
@@ -223,7 +223,7 @@ public function testSendWithMarkdownShouldEscapeDots()
 
         $expectedBody = [
             'chat_id' => 'testChannel',
-            'text' => 'I contain a \.',
+            'text' => 'I contain special characters \_ \* \[ \] \( \) \~ \` \> \# \+ \- \= \| \{ \} \. \! to send\.',
             'parse_mode' => 'MarkdownV2',
         ];
 
@@ -235,6 +235,6 @@ public function testSendWithMarkdownShouldEscapeDots()
 
         $transport = $this->createTransport($client, 'testChannel');
 
-        $transport->send(new ChatMessage('I contain a .'));
+        $transport->send(new ChatMessage('I contain special characters _ * [ ] ( ) ~ ` > # + - = | { } . ! to send.'));
     }
 }