diff --git a/README.md b/README.md
index 29eb71d..a018112 100644
--- a/README.md
+++ b/README.md
@@ -150,6 +150,13 @@ repository root. Stop any older dashboard process with `Ctrl-C` first:
 
 ```bash
 node dashboard/server.mjs --lan
+
+```
+
+On macOS, to prevent the host from sleeping while the demo runs:
+
+```bash
+caffeinate -i node dashboard/server.mjs --lan
 ```
 
 The server prints a **This computer** URL and one or more interface-labeled