diff --git a/README.md b/README.md
index b30fd7e9..e6b4d317 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,21 @@
 # PythonRobotics
+
 Python sample codes for robotics algorithm.
 
+
+# Requirements
+
+- numpy
+
+- scipy
+
+- matplotlib
+
 # Path Planning
 
 Path Planning Samples.
 
+
 ## RRT 
 
 Rapidly Randamized Tree Path plainning sample.
@@ -30,7 +41,7 @@ This script is a  path planning code with RRT \*
 
 ![PythonRobotics/figure_1.png at master · AtsushiSakai/PythonRobotics](https://github.com/AtsushiSakai/PythonRobotics/blob/master/scripts/PathPlanning/RRTCar/figure_1.png)
 
-Path planning for car like robot with RRT and dubins path planner.
+Path planning for a car robot with RRT and dubins path planner.
 
 ## Dubins path planning