diff --git a/README.md b/README.md
index 7603115..5d53e62 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,8 @@ This project provides a reusable Reverse Polish Notation (RPN) calculator engine
 
 - `src/rpn-calculator.js`: calculator engine
 - `samples/dev/index.html`: browser demo
-- `samples/hp48/index.html`: HP48-style browser demo
+- `samples/calc-01/index.html`: browser demo
+- `samples/calc-XX/index.html`: browser demo
 
 ## Main features