diff --git a/images/linux/scripts/base/apt.sh b/images/linux/scripts/base/apt.sh
index 7494e236b..3fc447f01 100644
--- a/images/linux/scripts/base/apt.sh
+++ b/images/linux/scripts/base/apt.sh
@@ -8,9 +8,6 @@ systemctl stop apt-daily-upgrade.timer
 systemctl disable apt-daily-upgrade.timer
 systemctl disable apt-daily-upgrade.service
 
-# This step should completely disable any automatic updates except manual
-sudo sed -i 's/APT::Periodic::Update-Package-Lists "1"/APT::Periodic::Update-Package-Lists "0"/' /etc/apt/apt.conf.d/20auto-upgrades
-
 # Enable retry logic for apt up to 10 times
 echo "APT::Acquire::Retries \"10\";" > /etc/apt/apt.conf.d/80-retries
 
@@ -18,7 +15,7 @@ echo "APT::Acquire::Retries \"10\";" > /etc/apt/apt.conf.d/80-retries
 echo "APT::Get::Assume-Yes \"true\";" > /etc/apt/apt.conf.d/90assumeyes
 
 # Uninstall unattended-upgrades
-apt-get remove unattended-upgrades
+apt-get purge unattended-upgrades
 
 # Use apt-fast for parallel downloads
 add-apt-repository -y ppa:apt-fast/stable