diff --git a/README.rst b/README.rst
index 7e03869c..5db2f536 100644
--- a/README.rst
+++ b/README.rst
@@ -64,6 +64,7 @@ Usage
         --resolve-off             Turns off dependency resolving.
         --reinstall               Use this option if you want to upgrade.
         --skip-installed          Skip installed packages.
+        --download-only           Download only the packages.
 
         -h, --help                Show this message and exit.
         -v, --version             Print version and exit.