diff --git a/docs/source/development_js.rst b/docs/source/development_js.rst
index 3d6fc1ce5..5ba19b6ae 100644
--- a/docs/source/development_js.rst
+++ b/docs/source/development_js.rst
@@ -66,7 +66,7 @@ from within JavaScript.
 
 .. code::
 
-    $ python setup.py sdist
+    $ python setup.py sdist --formats=zip,gztar
     $ python setup.py bdist_wheel