diff --git a/README.md b/README.md
index adbcae7..20a08a6 100644
--- a/README.md
+++ b/README.md
@@ -13,8 +13,19 @@ pip install pyvulnerabilitylookup
 You can use the `vulnerability_lookup` command:
 
 ```bash
+$ vulnerability_lookup -h
+usage: vulnerability_lookup [-h] --url URL (--redis_up | --vulnerability VULNERABILITY)
+
+Query a thing.
+
+options:
+  -h, --help            show this help message and exit
+  --url URL             URL of the instance.
+  --redis_up            Check if redis is up.
+  --vulnerability VULNERABILITY
+                        Get a vulnerability.
 ```
 
 ### Library
 
-See [API Reference]()
+See [API Reference](https://pyvulnerabilitylookup.readthedocs.io/en/latest/api_reference.html)