--- a/testing/marionette/client/marionette_driver/__init__.py
+++ b/testing/marionette/client/marionette_driver/__init__.py
@@ -1,13 +1,13 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-__version__ = '2.3.0'
+__version__ = '2.4.0'
 
 from marionette_driver import (
     addons,
     by,
     date_time_value,
     decorators,
     errors,
     expected,