diff --git a/README.md b/README.md
index 44bf012b..b47f28a6 100644
--- a/README.md
+++ b/README.md
@@ -9,18 +9,22 @@ Path Planning Sample.
 
 Rapidly Randamized Tree Path plainning sample.
 
-### simple_rrt.py
-
 ![PythonによるRapidly-Exploring Random Trees (RRT)パスプランニングサンプルプログラム - MyEnigma](http://cdn-ak.f.st-hatena.com/images/fotolife/m/meison_amsl/20160320/20160320175657.png)
 
-This script is a simple rrt planning code with Rapidly-Exploring Random Trees (RRT)
+This script is a simple path planning code with Rapidly-Exploring Random Trees (RRT)
 
 see (in Japanese) :
 
 [PythonによるRapidly-Exploring Random Trees (RRT)パスプランニングサンプルプログラム - MyEnigma](http://myenigma.hatenablog.com/entry/2016/03/23/092002) 
 
+## RRTStar
 
-### Dubins path planning
+![PythonRobotics/figure_1.png at master · AtsushiSakai/PythonRobotics](https://github.com/AtsushiSakai/PythonRobotics/blob/master/scripts/PathPlanning/RRTstar/figure_1.png)
+
+This script is a  path planning code with RRT \*
+
+
+## Dubins path planning
 
 A sample code for Dubins path planning.