diff --git a/Documentation.md b/Documentation.md
index dc2284b..8db0c91 100644
--- a/Documentation.md
+++ b/Documentation.md
@@ -8,4 +8,6 @@ classDiagram
     class Session
 Session : +beginningHour
 Session : +endHour
+Session <-- Movie
+
 ```
\ No newline at end of file