diff --git a/README.md b/README.md
index 0ee0256..af510de 100644
--- a/README.md
+++ b/README.md
@@ -3,3 +3,14 @@
 Dépot de test
 
 ok
+
+
+
+class="language-plantuml"
+@startuml
+Alice -> Bob: Authentication Request
+Bob --> Alice: Authentication Response
+
+Alice -> Bob: Another authentication Request
+Alice <-- Bob: Another authentication Response
+@enduml
\ No newline at end of file