diff --git a/plantuml.md b/plantuml.md
new file mode 100644
index 0000000..bb29fbd
--- /dev/null
+++ b/plantuml.md
@@ -0,0 +1,10 @@
+Da probamo PlantUML:
+
+```plantuml
+Alice -> Bob: Authentication Request
+Bob --> Alice: Authentication Response
+
+Alice -> Bob: Another authentication Request
+Alice <-- Bob: Another authentication Response
+```
+