diff --git a/reference/configuration/twig.rst b/reference/configuration/twig.rst
index 1b9c1ef3bd9..596d70d8a2b 100644
--- a/reference/configuration/twig.rst
+++ b/reference/configuration/twig.rst
@@ -62,6 +62,10 @@ base_template_class
 
 **type**: ``string`` **default**: ``Twig\Template``
 
+.. deprecated:: 7.1
+
+    The ``base_template_class`` option is deprecated since Symfony 7.1.
+
 Twig templates are compiled into PHP classes before using them to render
 contents. This option defines the base class from which all the template classes
 extend. Using a custom base template is discouraged because it will make your