diff --git a/README.md b/README.md
index 1e99a38e632d994aa8384c2b207cd6719917a917..3a37f55d444c0fdb12ee470ea6e8551d3ace566a 100755
--- a/README.md
+++ b/README.md
@@ -65,7 +65,8 @@ To install ovito you just have to follow the instructions in this [link](https:/
 >
 >	* macOS:Double-click the downloaded .dmg disk image file to open it, agree to the program license, and drag the Ovito application bundle into your Applications folder. Then start OVITO by double-clicking the application bundle.
 
-
+### numpy
+In ubuntu you can install it by **pip3 install numpy**
 ### TacoxDNA 
 More information can be found on this [Link](http://tacoxdna.sissa.it/)