diff --git a/nextcloud/cron/Dockerfile b/nextcloud/cron/Dockerfile
index 082648f..7efe8d7 100644
--- a/nextcloud/cron/Dockerfile
+++ b/nextcloud/cron/Dockerfile
@@ -1,5 +1,6 @@
 FROM nextcloud:fpm
 
+ENV DEBIAN_FRONTEND noninteractive
 RUN apt-get update && apt-get -y upgrade && apt-get -y install \
   supervisor \
   cron \
diff --git a/proxy/Dockerfile b/proxy/Dockerfile
index c1577eb..f9b09c3 100644
--- a/proxy/Dockerfile
+++ b/proxy/Dockerfile
@@ -1,4 +1,5 @@
 FROM nginx
 
+ENV DEBIAN_FRONTEND noninteractive
 RUN apt-get update && apt-get -y upgrade && apt -y install openssl
 RUN mkdir /etc/nginx/cert && openssl dhparam -out /etc/nginx/cert/dhparam.pem 2048