--- a/testing/firefox-ui/harness/firefox_ui_harness/__init__.py
+++ b/testing/firefox-ui/harness/firefox_ui_harness/__init__.py
@@ -1,8 +1,8 @@
 # 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__ = '1.3.0'
+__version__ = '1.4.0'
 
 import cli_functional
 import cli_update

--- a/testing/firefox-ui/harness/requirements.txt
+++ b/testing/firefox-ui/harness/requirements.txt
@@ -1,5 +1,5 @@
-firefox-puppeteer >= 3.0.0, <5.0.0
+firefox-puppeteer >= 49.0.0, <50.0.0
 marionette-client >= 2.3.0
 mozfile >= 1.2
 mozinfo >= 0.8
 mozinstall >= 1.12

--- a/testing/puppeteer/firefox/firefox_puppeteer/__init__.py
+++ b/testing/puppeteer/firefox/firefox_puppeteer/__init__.py
@@ -4,17 +4,17 @@
 
 import os
 
 from marionette_driver.marionette import HTMLElement
 
 from decorators import use_class_as_property
 
 
-__version__ = '4.0.0'
+__version__ = '49.0.0'
 
 
 class Puppeteer(object):
     """The puppeteer class is used to expose libraries to test cases.
 
     example:
     `class MyTestCase(MarionetteTestCase, Puppeteer)`