diff --git a/ubuntu/dresden.silvestris.systems.yml b/ubuntu/dresden.silvestris.systems.yml
index 8c4d5a2..76bec84 100644
--- a/ubuntu/dresden.silvestris.systems.yml
+++ b/ubuntu/dresden.silvestris.systems.yml
@@ -78,6 +78,7 @@
         - ssl_protocols TLSv1.2 TLSv1.3
         - ssl_prefer_server_ciphers on
         - ssl_ciphers '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_dhparam "/etc/nginx/dhparams.pem"
         - ssl_session_timeout 1d
         - ssl_session_cache shared:SSL:50m
         - ssl_session_tickets off