diff --git a/contrib/systemd/acmed.service b/contrib/systemd/acmed.service
index c527a1c..97d6c53 100644
--- a/contrib/systemd/acmed.service
+++ b/contrib/systemd/acmed.service
@@ -28,6 +28,7 @@ PrivateUsers=yes
 ProtectClock=yes
 ProtectHostname=yes
 ProtectKernelTunables=yes
+ProtectKernelModules=yes
 ProtectKernelLogs=yes
 ProtectSystem=yes
 ReadWritePaths=/etc/acmed /var/lib/acmed