diff --git a/README.md b/README.md
index 1ab4008..b26bf42 100644
--- a/README.md
+++ b/README.md
@@ -26,9 +26,14 @@ Usage
 * `-p <port>` - i.e. `sudo serve-https -p 443` (defaults to 80+443 or 8443)
 * `-d <dirpath>` - i.e. `serve-https -d /tmp/` (defaults to `pwd`)
 * `-c <content>` - i.e. `server-https -c 'Hello, World! '` (defaults to directory index)
-* `--express-app` - path to a file the exports an express-style app (`function (req, res, next) { ... }`)
+* `--express-app <path>` - path to a file the exports an express-style app (`function (req, res, next) { ... }`)
 * `--livereload` - inject livereload into all html pages (see also: [fswatch](http://stackoverflow.com/a/13807906/151312)), but be careful if `<dirpath>` has thousands of files it will spike your CPU usage to 100%
 
+* `--email <email>` - email to use for Let's Encrypt, Daplie DNS, Daplie Tunnel
+* `--agree-tos` - agree to terms for Let's Encrypt, Daplie DNS
+* `--servername <servername>` - use `<servername>` instead of `localhost.daplie.com`
+* `--tunnel` - make world-visible (must use `--servername`)
+
 Specifying a custom HTTPS certificate:
 
 * `--key /path/to/privkey.pem` specifies the server private key