diff --git a/doc/sources/admin/checkstate.rst b/doc/sources/admin/checkstate.rst
index 2d7d64470..9db402ca6 100644
--- a/doc/sources/admin/checkstate.rst
+++ b/doc/sources/admin/checkstate.rst
@@ -25,6 +25,23 @@ GET Parameter Need     Value
 ``password``  optional
 ============= ======== ============================================================
 
+Response
+--------
+
+The plugin will respond to the HTTP request with:
+
+* HTTP code 500 if something went wrong
+* HTTP code 200 and the following JSON content if something went right
+
+```
+{"result":1,"version":"2.0.14"}
+```
+
+.. versionadded:: 2.0.14
+   The *version* key is returned
+
+
+
 Example
 ~~~~~~~
 
diff --git a/doc/sources/admin/upgrade_2_0_x.rst b/doc/sources/admin/upgrade_2_0_x.rst
index 66d760d43..59c94c28b 100644
--- a/doc/sources/admin/upgrade_2_0_x.rst
+++ b/doc/sources/admin/upgrade_2_0_x.rst
@@ -29,6 +29,27 @@ None
 2.0.14
 ------
 
+LemonLDAP::NG version is returned by the CheckState plugin
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+If you use the `/checkstate` URL to monitor LemonLDAP::NG, you may notice a slight change in the output format:
+
+*2.0.13* :
+
+```
+{"result":1}
+```
+
+*2.0.14* :
+
+```
+{"result":1,"version":"2.0.14"}
+```
+
+Depending on your load balancer or monitoring configuration, this can cause false negatives.
+
+This plugin is disabled by default, and you may use a shared secret to hide this information to regular users and bots, please check the :doc:`checkstate` documentation for more information.
+
 Empty scopes now rejected in OAuth2.0 grants
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~