diff --git a/readme.md b/readme.md
index 55743dd..ed17804 100644
--- a/readme.md
+++ b/readme.md
@@ -8,3 +8,4 @@ A simple Python script to generate an image of a QRCode made of text character i
 
 - install python
 - install python lib qrcode -> `pip install qrcode`
+- install python lib Pillow -> `pip install Pillow`