diff --git a/README.md b/README.md
index cb9f64c..ac7d56d 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ All of the below documentation is written for the Python version rather than the
 
 ```shell
 $ poetry run python hstsparser.py -h
-usage: hstsparser.py [-h] [-w WORDLIST] (--firefox | --chrome) FILE
+usage: hstsparser.py [-h] [-w WORDLIST] [--csv CSV] (--firefox | --chrome) FILE
 
 Process HSTS databases