diff --git a/README.md b/README.md
index ace2857..ba74ab5 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,9 @@ Log into an existing server.
 - **whoami**  
 Check which user this session is using.  
 *Return:* `<user>`
+- **nop**  
+Do (almost) nothing.  
+*Return:* An "empty" response (four bytes denoting the message has a length of 0 and no additional data)
 
 If a return is not specified, the command will return `ok`. If arguments are not specified, the command does not take any arguments. Any command may return an error if malformed or an exception occurs.