diff --git a/monkey/monkey_island/deb-package/DEBIAN/postinst b/monkey/monkey_island/deb-package/DEBIAN/postinst
index 22e8d95b7..b55f791b8 100644
--- a/monkey/monkey_island/deb-package/DEBIAN/postinst
+++ b/monkey/monkey_island/deb-package/DEBIAN/postinst
@@ -5,11 +5,11 @@ INSTALLATION_FOLDER=/var/monkey/monkey_island/installation
 PYTHON_FOLDER=/var/monkey/monkey_island/bin/python
 
 # Prepare python virtualenv
-pip2 download --exists-action i virtualenv -d $INSTALLATION_FOLDER
+pip2 install virtualenv --no-index --find-links file://$INSTALLATION_FOLDER
 virtualenv -p python2.7 ${PYTHON_FOLDER}
 
 # install pip requirements
-${PYTHON_FOLDER}/bin/python -m pip download --exists-action i -r $MONKEY_FOLDER/monkey_island/pip_requirements.txt -d $INSTALLATION_FOLDER
+${PYTHON_FOLDER}/bin/python -m pip install -r $MONKEY_FOLDER/monkey_island/pip_requirements.txt --no-index --find-links file://$INSTALLATION_FOLDER
 
 # remove installation folder and unnecessary files
 rm -rf ${INSTALLATION_FOLDER}