diff --git a/src/Symfony/Component/HttpClient/Exception/ClientException.php b/src/Symfony/Component/HttpClient/Exception/ClientException.php
index 3eb997432b..9d8a5b2731 100644
--- a/src/Symfony/Component/HttpClient/Exception/ClientException.php
+++ b/src/Symfony/Component/HttpClient/Exception/ClientException.php
@@ -18,7 +18,7 @@ use Symfony\Contracts\HttpClient\Exception\ClientExceptionInterface;
  *
  * @author Nicolas Grekas <p@tchwork.com>
  *
- * @internal
+ * @experimental in 4.3
  */
 final class ClientException extends \RuntimeException implements ClientExceptionInterface
 {
diff --git a/src/Symfony/Component/HttpClient/Exception/InvalidArgumentException.php b/src/Symfony/Component/HttpClient/Exception/InvalidArgumentException.php
index 59afbd6ad0..c2c4168edb 100644
--- a/src/Symfony/Component/HttpClient/Exception/InvalidArgumentException.php
+++ b/src/Symfony/Component/HttpClient/Exception/InvalidArgumentException.php
@@ -16,7 +16,7 @@ use Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface;
 /**
  * @author Nicolas Grekas <p@tchwork.com>
  *
- * @internal
+ * @experimental in 4.3
  */
 final class InvalidArgumentException extends \InvalidArgumentException implements TransportExceptionInterface
 {
diff --git a/src/Symfony/Component/HttpClient/Exception/JsonException.php b/src/Symfony/Component/HttpClient/Exception/JsonException.php
index 5dd6345580..6c825cbeb6 100644
--- a/src/Symfony/Component/HttpClient/Exception/JsonException.php
+++ b/src/Symfony/Component/HttpClient/Exception/JsonException.php
@@ -18,7 +18,7 @@ use Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface;
  *
  * @author Nicolas Grekas <p@tchwork.com>
  *
- * @internal
+ * @experimental in 4.3
  */
 final class JsonException extends \JsonException implements TransportExceptionInterface
 {
diff --git a/src/Symfony/Component/HttpClient/Exception/RedirectionException.php b/src/Symfony/Component/HttpClient/Exception/RedirectionException.php
index 1c62f973b8..4e726f3b05 100644
--- a/src/Symfony/Component/HttpClient/Exception/RedirectionException.php
+++ b/src/Symfony/Component/HttpClient/Exception/RedirectionException.php
@@ -18,7 +18,7 @@ use Symfony\Contracts\HttpClient\Exception\RedirectionExceptionInterface;
  *
  * @author Nicolas Grekas <p@tchwork.com>
  *
- * @internal
+ * @experimental in 4.3
  */
 final class RedirectionException extends \RuntimeException implements RedirectionExceptionInterface
 {
diff --git a/src/Symfony/Component/HttpClient/Exception/ServerException.php b/src/Symfony/Component/HttpClient/Exception/ServerException.php
index 7b91de4865..eed59de582 100644
--- a/src/Symfony/Component/HttpClient/Exception/ServerException.php
+++ b/src/Symfony/Component/HttpClient/Exception/ServerException.php
@@ -18,7 +18,7 @@ use Symfony\Contracts\HttpClient\Exception\ServerExceptionInterface;
  *
  * @author Nicolas Grekas <p@tchwork.com>
  *
- * @internal
+ * @experimental in 4.3
  */
 final class ServerException extends \RuntimeException implements ServerExceptionInterface
 {
diff --git a/src/Symfony/Component/HttpClient/Exception/TransportException.php b/src/Symfony/Component/HttpClient/Exception/TransportException.php
index 85606aa3b8..9c061787e7 100644
--- a/src/Symfony/Component/HttpClient/Exception/TransportException.php
+++ b/src/Symfony/Component/HttpClient/Exception/TransportException.php
@@ -16,7 +16,7 @@ use Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface;
 /**
  * @author Nicolas Grekas <p@tchwork.com>
  *
- * @internal
+ * @experimental in 4.3
  */
 final class TransportException extends \RuntimeException implements TransportExceptionInterface
 {