diff --git a/README.md b/README.md
index 305d761..06f918e 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@ Normal Map Generator is a tool written in Python
 - Python
 - Scipy
 - Numpy
+- matplotlib
 
 ## Usage
 
@@ -29,4 +30,4 @@ Show help message
 Smooth gaussian blur applied on the image
 
 #### -it INTENSITY_VALUE, --intensity INTENSITY_VALUE
-Intensity of the normal map
\ No newline at end of file
+Intensity of the normal map