diff --git a/readme.md b/readme.md
index da27691..47e993e 100644
--- a/readme.md
+++ b/readme.md
@@ -150,6 +150,8 @@ docker run -it --rm --name qemu -e "BOOT=http://example.com/image.iso" -p 8006:8
   ```yaml
   environment:
     DHCP: "Y"
+  devices:
+    - /dev/vhost-net
   device_cgroup_rules:
     - 'c *:* rwm'
   ```