diff --git a/src/Symfony/Component/HttpClient/Exception/ClientException.php b/src/Symfony/Component/HttpClient/Exception/ClientException.php
index 3eb997432b3c8..9d8a5b2731d4a 100644
--- a/src/Symfony/Component/HttpClient/Exception/ClientException.php
+++ b/src/Symfony/Component/HttpClient/Exception/ClientException.php
@@ -18,7 +18,7 @@
  *
  * @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 59afbd6ad0351..c2c4168edb900 100644
--- a/src/Symfony/Component/HttpClient/Exception/InvalidArgumentException.php
+++ b/src/Symfony/Component/HttpClient/Exception/InvalidArgumentException.php
@@ -16,7 +16,7 @@
 /**
  * @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 5dd63455803aa..6c825cbeb6886 100644
--- a/src/Symfony/Component/HttpClient/Exception/JsonException.php
+++ b/src/Symfony/Component/HttpClient/Exception/JsonException.php
@@ -18,7 +18,7 @@
  *
  * @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 1c62f973b8ef7..4e726f3b05305 100644
--- a/src/Symfony/Component/HttpClient/Exception/RedirectionException.php
+++ b/src/Symfony/Component/HttpClient/Exception/RedirectionException.php
@@ -18,7 +18,7 @@
  *
  * @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 7b91de486558f..eed59de582e7e 100644
--- a/src/Symfony/Component/HttpClient/Exception/ServerException.php
+++ b/src/Symfony/Component/HttpClient/Exception/ServerException.php
@@ -18,7 +18,7 @@
  *
  * @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 85606aa3b830f..9c061787e79fc 100644
--- a/src/Symfony/Component/HttpClient/Exception/TransportException.php
+++ b/src/Symfony/Component/HttpClient/Exception/TransportException.php
@@ -16,7 +16,7 @@
 /**
  * @author Nicolas Grekas <p@tchwork.com>
  *
- * @internal
+ * @experimental in 4.3
  */
 final class TransportException extends \RuntimeException implements TransportExceptionInterface
 {