diff --git a/doc/source/api-configuration.rst b/doc/source/api-configuration.rst
index 9e8b6ab6..1b68456c 100644
--- a/doc/source/api-configuration.rst
+++ b/doc/source/api-configuration.rst
@@ -54,6 +54,8 @@ For more details, click on the configuration parameters.
 +----------------------------------+--------------------------------------------------------+------------------------------------------------------------+
 | ARA_ENV_                         | ``default``                                            | Environment to load configuration for                      |
 +----------------------------------+--------------------------------------------------------+------------------------------------------------------------+
+| ARA_EXTERNAL_AUTH_               | ``False``                                              | Whether or not to enable external authentication           |
++----------------------------------+--------------------------------------------------------+------------------------------------------------------------+
 | ARA_LOGGING_                     | See ARA_LOGGING_                                       | Logging configuration                                      |
 +----------------------------------+--------------------------------------------------------+------------------------------------------------------------+
 | ARA_LOG_LEVEL_                   | ``INFO``                                               | Log level of the different components                      |
@@ -418,6 +420,17 @@ or ``prod.yaml`` instead.
    This lets users override only the parameters they are interested in for
    specific environments.
 
+ARA_EXTERNAL_AUTH
+~~~~~~~~~~~~~~~~~
+
+- **Environment variable**: ``ARA_EXTERNAL_AUTH``
+- **Configuration file variable**: ``EXTERNAL_AUTH``
+- **Type**: ``bool``
+- **Default**: ``False``
+- **Provided by**: django-rest-framework `authentication <https://www.django-rest-framework.org/api-guide/authentication/>`_
+
+Whether or not to enable external authentication.
+
 ARA_LOGGING
 ~~~~~~~~~~~
 
diff --git a/doc/source/api-security.rst b/doc/source/api-security.rst
index 6278b467..4ff34f94 100644
--- a/doc/source/api-security.rst
+++ b/doc/source/api-security.rst
@@ -93,6 +93,16 @@ This is done with the two following configuration options:
 
 These settings are global and are effective for all API endpoints.
 
+Enabling external authentication
+------------------------------------------------
+
+Once you you have enabled authentication against the API, you can enable external
+authentication. This is usefull especially in production environments.
+
+This is done with the following configuration option:
+
+- :ref:`api-configuration:ARA_EXTERNAL_AUTH` for external authentication
+
 Setting up authentication for the Ansible plugins
 -------------------------------------------------