--- a/dom/media/test/external/external_media_harness/runtests.py
+++ b/dom/media/test/external/external_media_harness/runtests.py
@@ -81,27 +81,16 @@ class MediaTestRunner(BaseMarionetteTest
                     logger.warning('Failed to gather test failure media debug',
                                    exc_info=True)
             return rv
 
         self.result_callbacks.append(gather_media_debug)
 
 
 class FirefoxMediaHarness(MarionetteHarness):
-    def __init__(self,
-             runner_class=MediaTestRunner,
-             parser_class=MediaTestArguments):
-        # workaround until next marionette-client release - Bug 1227918
-        try:
-            MarionetteHarness.__init__(self, runner_class, parser_class)
-        except Exception:
-            logger = mozlog.commandline.setup_logging('Media-test harness', {})
-            logger.error('Failure setting up harness', exc_info=True)
-            raise
-
     def parse_args(self, *args, **kwargs):
         return MarionetteHarness.parse_args(self, {'mach': sys.stdout})
 
 
 def cli():
     mn_cli(MediaTestRunner, MediaTestArguments, FirefoxMediaHarness)
 
 if __name__ == '__main__':

--- a/dom/media/test/external/requirements.txt
+++ b/dom/media/test/external/requirements.txt
@@ -1,22 +1,24 @@
-browsermob-proxy==0.6.0
+browsermob-proxy==0.7.1
 manifestparser==1.1
 mozcrash==0.16
-mozdevice==0.46
+mozdevice==0.48
 mozfile==1.2
 mozhttpd==0.7
-mozinfo==0.8
+mozinfo==0.9
 # optional - mozharness install step
 mozInstall==1.12
-mozlog==3.0
+mozlog==3.1
 moznetwork==0.27
 mozprocess==0.22
-mozprofile==0.27
-mozrunner==6.9
+mozprofile==0.28
+mozrunner==6.11
 moztest==0.7
 mozversion==1.4
-marionette-client == 2.0.0
-marionette-driver == 1.1.1
+wptserve==1.3.0
+marionette-client == 2.1.0
+marionette-driver == 1.2.0
+marionette-transport == 1.1.0
 firefox-puppeteer==3.1.0
 
 # Install the firefox media tests package
 ./

--- a/dom/media/test/external/setup.py
+++ b/dom/media/test/external/setup.py
@@ -2,19 +2,19 @@
 # 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/.
 
 from setuptools import setup, find_packages
 
 PACKAGE_VERSION = '1.0'
 
 deps = [
-    'marionette-client == 2.0.0',
-    'marionette-driver == 1.1.1',
-    'mozlog == 3.0',
+    'marionette-client == 2.1.0',
+    'marionette-driver == 1.2.0',
+    'mozlog == 3.1',
     'manifestparser == 1.1',
     'firefox-puppeteer >= 3.1.0, <4.0.0',
 ]
 
 setup(name='external-media-tests',
       version=PACKAGE_VERSION,
       description=('A collection of Mozilla Firefox media playback tests run '
                    'with Marionette'),