1 files changed, 4 insertions, 1 deletions
diff --git a/README.md b/README.md
index 594ea4b..01197a8 100644
--- a/README.md
+++ b/README.md
@@ -12,13 +12,16 @@ Geminispace, but it defaults to a specific domain.
 
 ```
 $ go build
-$ ./kineto [-b 127.0.0.1:8080] gemini://example.org
+$ ./kineto [-b 127.0.0.1:8080] [-s style.css] gemini://example.org
 ```
 
 The -b argument is optional and allows you to bind to an arbitrary address; by
 default kineto will bind to `:8080`. You should set up some external reverse
 proxy like nginx to forward traffic to this port and add TLS.
 
+The -s argument is optional and allows you to specify a custom CSS file. By
+default kineto will serve its built-in style.
+
 ## "kineto"?
 
 It's named after the Contraves-Goerz Kineto Tracking Mount, which is used by