diff --git a/Casks/firefox-beta-cn.rb b/Casks/firefox-beta-cn.rb
index 7acf9866a..650f9c5fb 100644
--- a/Casks/firefox-beta-cn.rb
+++ b/Casks/firefox-beta-cn.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'firefox-beta-cn' do
-  version '36.0b3'
-  sha256 'a188706dd04965cf1e03cf41fb3f0b85ecd89ee1df0ba353edb8a5bac1aac148'
+  version '36.0b4'
+  sha256 '01b2861983fcffbe96070a236620ceaddc166af971db001788b64bf2c51e7a81'
 
   url "https://download.mozilla.org/?product=firefox-#{version}&os=osx&lang=zh-CN"
   homepage 'https://www.mozilla.org/zh-CN/firefox/beta/'
diff --git a/Casks/firefox-beta-de.rb b/Casks/firefox-beta-de.rb
index 18a9d2e14..f330af38c 100644
--- a/Casks/firefox-beta-de.rb
+++ b/Casks/firefox-beta-de.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'firefox-beta-de' do
-  version '36.0b3'
-  sha256 '9e993864298af8684351576f9af5e7a93edf1d8d7fb234cdec9ba11d7fcc1f1c'
+  version '36.0b4'
+  sha256 'ea602e851cf1d76219e6bdc2e285e1708ac3565e4f11efb8afbd50115f0f9550'
 
   url "https://download.mozilla.org/?product=firefox-#{version}&os=osx&lang=de"
   homepage 'https://www.mozilla.org/de/firefox/beta/'
diff --git a/Casks/firefox-beta-gb.rb b/Casks/firefox-beta-gb.rb
index 368c0c367..5ac3de2cd 100644
--- a/Casks/firefox-beta-gb.rb
+++ b/Casks/firefox-beta-gb.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'firefox-beta-gb' do
-  version '36.0b3'
-  sha256 '65c03ec7294bcf1365c09a138ee4338b22f2d99965a359f5d4edd19dcba9a33c'
+  version '36.0b4'
+  sha256 '415a3e4239d7ea7b1e2925b17ce03d15457b1a1905e65b43e8fc216b30da7b2a'
 
   url "https://download.mozilla.org/?product=firefox-#{version}-SSL&os=osx&lang=en-GB"
   homepage 'https://www.mozilla.org/en-GB/firefox/beta/'
diff --git a/Casks/firefox-beta-ja.rb b/Casks/firefox-beta-ja.rb
index 753636b0c..379d27241 100644
--- a/Casks/firefox-beta-ja.rb
+++ b/Casks/firefox-beta-ja.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'firefox-beta-ja' do
-  version '36.0b3'
-  sha256 '3c7a17ffad3eac9e30f1c6fcd0e216cf2b55f63f0a6d9d598a56cb6cbd018e90'
+  version '36.0b4'
+  sha256 'a6a6eb7def1f23542e9babecc4dd99632939aaaa2573a331080f942a452574fe'
 
   url "https://download.mozilla.org/?product=firefox-#{version}&os=osx&lang=ja-JP-mac"
   homepage 'http://www.mozilla.org/ja/firefox/channel/beta'
diff --git a/Casks/firefox-beta.rb b/Casks/firefox-beta.rb
index 8f46e262d..2dcdb036f 100644
--- a/Casks/firefox-beta.rb
+++ b/Casks/firefox-beta.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'firefox-beta' do
-  version '36.0b3'
-  sha256 '76dc27848dc960b33a2f51002559f0c391e43ea18e948779555547a0db2118ba'
+  version '36.0b4'
+  sha256 'f9715f8fcf7fc5c3be20be43bf7c0b9a57b3768729bee7e16931ec0b40689f3f'
 
   url "https://download.mozilla.org/?product=firefox-#{version}&os=osx&lang=en-US"
   homepage 'https://www.mozilla.org/en-US/firefox/beta/'