diff --git a/conf/systemd.service b/conf/systemd.service
index 7bb448e..caf7e46 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -18,16 +18,20 @@ StandardError=inherit
 NoNewPrivileges=yes
 PrivateTmp=yes
 PrivateDevices=yes
-RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6 AF_NETLINK
 RestrictNamespaces=yes
 RestrictRealtime=yes
 DevicePolicy=closed
+ProtectClock=yes
+ProtectHostname=yes
+ProtectProc=invisible
 ProtectSystem=full
 ProtectControlGroups=yes
 ProtectKernelModules=yes
 ProtectKernelTunables=yes
 LockPersonality=yes
-SystemCallFilter=~@clock @debug @module @mount @obsolete @reboot @setuid @swap
+SystemCallArchitectures=native
+SystemCallFilter=~@clock @debug @module @mount @obsolete @reboot @setuid @swap @cpu-emulation @privileged
 
 # Denying access to capabilities that should not be relevant for webapps
 # Doc: https://man7.org/linux/man-pages/man7/capabilities.7.html