diff --git a/README.rst b/README.rst
index 0b5433e..276a3e2 100644
--- a/README.rst
+++ b/README.rst
@@ -47,6 +47,7 @@ Usage
 
     Options:
         --use-local           Use ONLY local package info instead of querying PyPI
+        --only-venv           Use ONLY venv packages instead local system
         --pypi-server <url>   Use custom PyPi server
         --proxy <url>         Use Proxy, parameter will be passed to requests library. You can also just set the
                               environments parameter in your terminal: