diff --git a/ubuntu/18.04/install.sh b/ubuntu/18.04/install.sh
index 8f6ccd5..849df4c 100644
--- a/ubuntu/18.04/install.sh
+++ b/ubuntu/18.04/install.sh
@@ -16,14 +16,6 @@ if [ ! $(id -u) ] ; then
     exit 1
 fi
 
-# Check if we have the bionic-proposed sources list
-
-cat /etc/apt/sources.list | grep bionic-proposed > /dev/null
-if [ "$?" == "1" ]; then
-bash -c 'echo "deb http://archive.ubuntu.com/ubuntu/ bionic-proposed restricted main multiverse universe" >> /etc/apt/sources.list <<EOF
-EOF'
-fi
-
 apt update && apt dist-upgrade -y
 
 if [ -f /var/run/reboot-required ]; then