diff --git a/developer_manual/app/events.rst b/developer_manual/app/events.rst
index e1502ce75..6a6ba79a9 100644
--- a/developer_manual/app/events.rst
+++ b/developer_manual/app/events.rst
@@ -75,3 +75,8 @@ In the 'Application.php' the event and the listening class are connected. The cl
 
 
 This provides a clear interface and contract between the emitted event and the listening services.
+
+Available Events
+----------------
+
+'OCP\Security\CSP\AddContentSecurityPolicyEvent': This event is emitted so apps can modify the CSP provided by nextcloud. For example if more domains can be used to connect to.