diff --git a/doc/source/cli/man/openstack.rst b/doc/source/cli/man/openstack.rst
index 0745fb7a06..1ba9db0ddd 100644
--- a/doc/source/cli/man/openstack.rst
+++ b/doc/source/cli/man/openstack.rst
@@ -205,6 +205,10 @@ OPTIONS
 
     Show help message and exit
 
+.. option:: --timing
+
+    Print API call timing information
+
 COMMANDS
 ========