diff --git a/etc/schema.json b/etc/schema.json
index 321d39d4ff..f06b9d98cd 100644
--- a/etc/schema.json
+++ b/etc/schema.json
@@ -5116,6 +5116,10 @@
                             "type": "string"
                         }
                     }
+                },
+                "server_security_failure_reason": {
+                    "description": "The string describing the reason why the server failed the security Handshake, see rfc 6143 section 7.1",
+                    "type": "string"
                 }
             },
             "optional": true