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diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml
index 610c821dc..7eaf52bc5 100644
--- a/man/systemd.exec.xml
+++ b/man/systemd.exec.xml
@@ -894,6 +894,24 @@
                                 for details.</para></listitem>
                         </varlistentry>
 
+                        <varlistentry>
+                                <term><varname>PrivateDevices=</varname></term>
+
+                                <listitem><para>Takes a boolean
+                                argument. If true, sets up a new /dev
+                                namespace for the executed processes
+                                and only adds API pseudo devices such
+                                as <filename>/dev/null</filename>,
+                                <filename>/dev/zero</filename> or
+                                <filename>/dev/random</filename> to
+                                it, but no physical devices such as
+                                <filename>/dev/sda</filename>. This is
+                                useful to securely turn off physical
+                                device access by the executed
+                                process. Defaults to
+                                false.</para></listitem>
+                        </varlistentry>
+
                         <varlistentry>
                                 <term><varname>MountFlags=</varname></term>