diff --git a/golang-github-prometheus-prometheus.changes b/golang-github-prometheus-prometheus.changes
index 4148976..6ccd086 100644
--- a/golang-github-prometheus-prometheus.changes
+++ b/golang-github-prometheus-prometheus.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Sep 20 14:44:20 UTC 2021 - Johannes Segitz <jsegitz@suse.com>
+
+- Added hardening to systemd service(s) (bsc#1181400). Modified:
+  * prometheus.service
+
 -------------------------------------------------------------------
 Thu Jul  8 08:08:39 UTC 2021 - Witek Bedyk <witold.bedyk@suse.com>
 
diff --git a/prometheus.service b/prometheus.service
index 68c7e8e..fc6c8db 100644
--- a/prometheus.service
+++ b/prometheus.service
@@ -5,6 +5,19 @@ Wants=network-online.target
 After=network-online.target
 
 [Service]
+# added automatically, for details please see
+# https://en.opensuse.org/openSUSE:Security_Features#Systemd_hardening_effort
+ProtectSystem=full
+ProtectHome=true
+PrivateDevices=true
+ProtectHostname=true
+ProtectClock=true
+ProtectKernelTunables=true
+ProtectKernelModules=true
+ProtectKernelLogs=true
+ProtectControlGroups=true
+RestrictRealtime=true
+# end of automatic additions 
 Restart=always
 User=prometheus
 EnvironmentFile=-/etc/sysconfig/prometheus