diff --git a/certbot-apache/tests/apache-conf-files/apache-conf-test b/certbot-apache/tests/apache-conf-files/apache-conf-test
index 66955819e..3fccab043 100755
--- a/certbot-apache/tests/apache-conf-files/apache-conf-test
+++ b/certbot-apache/tests/apache-conf-files/apache-conf-test
@@ -51,9 +51,9 @@ function Cleanup() {
 
 # if our environment asks us to enable modules, do our best!
 if [ "$1" = --debian-modules ] ; then
-    sudo apt-get install -y apache2
-    sudo apt-get install -y libapache2-mod-wsgi-py3
-    sudo apt-get install -y libapache2-mod-macro
+    sudo DEBIAN_FRONTEND=noninteractive apt-get install -y apache2
+    sudo DEBIAN_FRONTEND=noninteractive apt-get install -y libapache2-mod-wsgi-py3
+    sudo DEBIAN_FRONTEND=noninteractive apt-get install -y libapache2-mod-macro
 
     for mod in  ssl rewrite macro wsgi deflate userdir version mime setenvif ; do
         echo -n enabling $mod
diff --git a/letstest/scripts/bootstrap_os_packages.sh b/letstest/scripts/bootstrap_os_packages.sh
index 8c9b35c13..26d6f6ddb 100755
--- a/letstest/scripts/bootstrap_os_packages.sh
+++ b/letstest/scripts/bootstrap_os_packages.sh
@@ -36,7 +36,7 @@ DeterminePythonVersion() {
 BootstrapDebCommon() {
   sudo apt-get update || error apt-get update hit problems but continuing anyway...
 
-  sudo apt-get install -y --no-install-recommends \
+  sudo DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
     python3 \
     python3-dev \
     python3-venv \