diff --git a/README.md b/README.md
index 782e304..c4b4835 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,7 @@ your-project/
 3. Configure Tailscale
     - Replace `{{YOUR_TAILSCALE_AUTHKEY}}` in the docker-compose.yml with your actual Tailscale auth key
     - Optionally, update the file in `tailscale/config/serve.json` if you need specific Tailscale serve configurations
+        - CAUTION: Changing `"${TS_CERT_DOMAIN}:443": false` to `true` will expose the service to the internet
 
 4. Configure {{service}}
     - See {{service_docs}} for configuration options