diff --git a/docs/sources/reference/commandline/cli.md b/docs/sources/reference/commandline/cli.md
index 714116ddc5..286ba4a7a8 100644
--- a/docs/sources/reference/commandline/cli.md
+++ b/docs/sources/reference/commandline/cli.md
@@ -71,6 +71,7 @@ expect an integer, and they can only be specified once.
       --mtu=0                                    Set the containers network MTU
                                                    if no value is provided: default to the default route MTU or 1500 if no default route is available
       -p, --pidfile="/var/run/docker.pid"        Path to use for daemon PID file
+      --registry-mirror=[]                       Specify a preferred Docker registry mirror
       -s, --storage-driver=""                    Force the Docker runtime to use a specific storage driver
       --selinux-enabled=false                    Enable selinux support. SELinux does not presently support the BTRFS storage driver
       --storage-opt=[]                           Set storage driver options