diff --git a/pages/de/sidebar.txt b/pages/de/sidebar.txt
index 55c6772..4e58bd0 100644
--- a/pages/de/sidebar.txt
+++ b/pages/de/sidebar.txt
@@ -6,6 +6,7 @@
       * [[de:server:operating_systems:arch_linux|Arch Linux]]
     * [[de:server:services|Services (Arch)]]
         * [[de:server:services:openssh|OpenSSH]]
+        * [[de:server:services:firewalld|firewalld]]
         * [[de:server:services:crontab|crontab]]
         * [[de:server:services:borg|borg]]
         * [[de:server:services:rsync|rsync]]
@@ -43,6 +44,7 @@
         * [[de:desktop:environments:kde|KDE]]
     * [[de:desktop:services|Services (Arch)]]
         * [[de:desktop:services:openssh|OpenSSH]]
+        * [[de:desktop:services:firewalld|firewalld]]
         * [[de:desktop:services:crontab|crontab]]
         * [[de:desktop:services:borg|borg]]
         * [[de:desktop:services:rsync|rsync]]