diff --git a/README.md b/README.md
index 1b03876..9f6bf20 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,7 @@ Options:
   -l, --left <LEFT>            
   -r, --right <RIGHT>          
   -s, --selection <SELECTION>  
+  -c <COUNT_ONLY>              [possible values: true, false]
   -h, --help                   Print help
 ```