diff --git a/Use_Case_Diagram.md b/Use_Case_Diagram.md
index aa5aea5..3693cb3 100644
--- a/Use_Case_Diagram.md
+++ b/Use_Case_Diagram.md
@@ -28,5 +28,6 @@ u --> UC4
 u --> UC5
 u --> UC6
   UC6_1 .> UC6 : extend
+  UC6 .> UC6_2 : include
 
 @enduml
\ No newline at end of file