diff --git a/dom/media/test/external/requirements.txt b/dom/media/test/external/requirements.txt
index 71aafcde987a..8857e8a9c7a2 100644
--- a/dom/media/test/external/requirements.txt
+++ b/dom/media/test/external/requirements.txt
@@ -17,4 +17,4 @@ mozversion==1.4
 wptserve==1.3.0
 marionette-client==3.1.0
 marionette-driver==2.0.0
-firefox-puppeteer >= 50.0.0, <51.0.0
+firefox-puppeteer >= 51.0.0, <52.0.0
diff --git a/testing/firefox-ui/harness/requirements.txt b/testing/firefox-ui/harness/requirements.txt
index d910cc460089..b4a7e47d6de6 100644
--- a/testing/firefox-ui/harness/requirements.txt
+++ b/testing/firefox-ui/harness/requirements.txt
@@ -1,4 +1,4 @@
-firefox-puppeteer >= 50.0.0, <51.0.0
+firefox-puppeteer >= 51.0.0, <52.0.0
 marionette-client >= 2.3.0
 mozfile >= 1.2
 mozinfo >= 0.8
diff --git a/testing/puppeteer/firefox/firefox_puppeteer/__init__.py b/testing/puppeteer/firefox/firefox_puppeteer/__init__.py
index 1fc9aea41f34..7b783c170a5c 100644
--- a/testing/puppeteer/firefox/firefox_puppeteer/__init__.py
+++ b/testing/puppeteer/firefox/firefox_puppeteer/__init__.py
@@ -9,7 +9,7 @@ from marionette_driver.marionette import HTMLElement
 from decorators import use_class_as_property
 
 
-__version__ = '50.0.0'
+__version__ = '51.0.0'
 
 
 class Puppeteer(object):
diff --git a/testing/puppeteer/firefox/requirements.txt b/testing/puppeteer/firefox/requirements.txt
index 2a95051ec61d..4b69684b62b9 100644
--- a/testing/puppeteer/firefox/requirements.txt
+++ b/testing/puppeteer/firefox/requirements.txt
@@ -1,2 +1,2 @@
-marionette-driver >= 1.4.0
+marionette-driver >= 2.0.0
 mozinfo >= 0.8