diff --git a/docs/diagrams/ModelClassDiagram.puml b/docs/diagrams/ModelClassDiagram.puml
index fa77752b3a3..b395fcd262c 100644
--- a/docs/diagrams/ModelClassDiagram.puml
+++ b/docs/diagrams/ModelClassDiagram.puml
@@ -18,6 +18,8 @@ Class Address
 Class Email
 Class Name
 Class Phone
+Class Attendance
+Class Payment
 Class Tag
 
 Class I #FFFFFF