diff --git a/src/Symfony/Component/Mime/Message.php b/src/Symfony/Component/Mime/Message.php
index db6e13fae6a4d..4d6af1c94d4b4 100644
--- a/src/Symfony/Component/Mime/Message.php
+++ b/src/Symfony/Component/Mime/Message.php
@@ -130,17 +130,11 @@ private function generateMessageId(string $email): string
         return bin2hex(random_bytes(16)).strstr($email, '@');
     }
 
-    /**
-     * @internal
-     */
     public function __serialize(): array
     {
         return [$this->headers, $this->body];
     }
 
-    /**
-     * @internal
-     */
     public function __unserialize(array $data): void
     {
         [$this->headers, $this->body] = $data;
diff --git a/src/Symfony/Component/Mime/RawMessage.php b/src/Symfony/Component/Mime/RawMessage.php
index 16b090c95474e..40a2795e2369e 100644
--- a/src/Symfony/Component/Mime/RawMessage.php
+++ b/src/Symfony/Component/Mime/RawMessage.php
@@ -69,17 +69,11 @@ final public function unserialize($serialized)
         $this->__unserialize(unserialize($serialized));
     }
 
-    /**
-     * @internal
-     */
     public function __serialize(): array
     {
         return [$this->message];
     }
 
-    /**
-     * @internal
-     */
     public function __unserialize(array $data): void
     {
         [$this->message] = $data;