diff --git a/README.md b/README.md
index 501e54f..6ef4bf4 100644
--- a/README.md
+++ b/README.md
@@ -87,7 +87,7 @@ For more information: [Extending MISP with Python modules](https://www.circl.lu/
 ## How to install and start MISP modules in a Python virtualenv?
 
 ~~~~bash
-sudo apt-get install python3-dev python3-pip libpq5 libjpeg-dev tesseract-ocr imagemagick
+sudo apt-get install python3-dev python3-pip libpq5 libjpeg-dev tesseract-ocr imagemagick virtualenv
 sudo -u www-data virtualenv -p python3 /var/www/MISP/venv
 cd /usr/local/src/
 sudo git clone https://github.com/MISP/misp-modules.git