diff --git a/preinstall b/preinstall
index bef1a03..dd0492d 100755
--- a/preinstall
+++ b/preinstall
@@ -1,5 +1,13 @@
 #!/bin/bash
 
+export DEBIAN_FRONTEND=noninteractive
+export APT_LISTCHANGES_FRONTEND=none
+export LANG=C.UTF-8
+export LANGUAGE=C
+export LC_ALL=C.UTF-8
+
+apt-get --yes --no-install-recommends jq
+
 mac="$(ip -j a show dev eth0 | jq -r .[].address | head -n1)"
 if [ -z "${mac}" ]; then
   mac="$(ip -j a show dev end0 | jq -r .[].address | head -n1)"