diff --git a/.buildkite/hooks/pre-command b/.buildkite/hooks/pre-command
index baaf853ca..68bf14ef9 100644
--- a/.buildkite/hooks/pre-command
+++ b/.buildkite/hooks/pre-command
@@ -1,8 +1,9 @@
 # Install packages we need. Docker must be installed and configured,
 # as should Go itself. We just install some extra bits and pieces.
 function install_pkgs() {
+  export DEBIAN_FRONTEND=noninteractive
   while true; do
-    if sudo apt-get update && sudo apt-get install -y "$@"; then
+    if sudo -E apt-get update && sudo -E apt-get install -y "$@"; then
       break
     fi
   done