diff --git a/setup/mail-dovecot.sh b/setup/mail-dovecot.sh
index 6c737197..f97dbb1e 100755
--- a/setup/mail-dovecot.sh
+++ b/setup/mail-dovecot.sh
@@ -85,7 +85,7 @@ tools/editconf.py /etc/dovecot/conf.d/10-ssl.conf \
 	"ssl_cert=<$STORAGE_ROOT/ssl/ssl_certificate.pem" \
 	"ssl_key=<$STORAGE_ROOT/ssl/ssl_private_key.pem" \
 	"ssl_protocols=!SSLv3 !SSLv2" \
-	"ssl_cipher_list=ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256" \
+	"ssl_cipher_list = ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS" \
 	"ssl_prefer_server_ciphers = yes" \
 	"ssl_dh_parameters_length = 2048"
 
diff --git a/setup/system.sh b/setup/system.sh
index 1e8550ee..e437ac73 100755
--- a/setup/system.sh
+++ b/setup/system.sh
@@ -121,6 +121,7 @@ apt_get_quiet autoremove
 
 echo Installing system packages...
 apt_install python3 python3-dev python3-pip \
+    build-essential libssl-dev libffi-dev \
 	netcat-openbsd wget curl git sudo coreutils bc \
 	haveged pollinate unzip \
 	unattended-upgrades cron ntp fail2ban