diff --git a/README.md b/README.md
index e19c72f..0d56ffb 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
+```plantuml
 @startuml
 
 Class User {
@@ -72,3 +73,4 @@ skinparam classFontColor #black
 skinparam classFontName Tahoma
 
 @enduml
+```