diff --git a/install.sh b/install.sh
index 42adb1d..43321dc 100755
--- a/install.sh
+++ b/install.sh
@@ -277,6 +277,7 @@ install_deb () {
   if [[ "${RUN_UNATTENDED}" -ne "0" ]]; then
       yes="--n"
       yesapt="-y"
+      export DEBIAN_FRONTEND=noninteractive
   fi
   echo "Updating package indexes..."
   ${SUDO} apt-get update