diff --git a/Casks/firefox-beta-cn.rb b/Casks/firefox-beta-cn.rb
index 1a1cc30c0..26c628fa4 100644
--- a/Casks/firefox-beta-cn.rb
+++ b/Casks/firefox-beta-cn.rb
@@ -1,10 +1,10 @@
 cask :v1 => 'firefox-beta-cn' do
-  version '32.0b1'
-  sha256 '782e468b0277fd38f57205acf88f7dc3266b0f751ff40859d4772b8f22c7f13a'
+  version '36.0b1'
+  sha256 '26fc7da08b829a62c00d15110d1e5478527facab7cf88f0b140eea3cdc828404'
 
   url "https://download.mozilla.org/?product=firefox-#{version}&os=osx&lang=zh-CN"
   homepage 'https://www.mozilla.org/zh-CN/firefox/beta/'
-  license :oss
+  license :mpl
 
   app 'Firefox.app'
 end
diff --git a/Casks/firefox-beta-de.rb b/Casks/firefox-beta-de.rb
index ab6236a4f..f1741c33d 100644
--- a/Casks/firefox-beta-de.rb
+++ b/Casks/firefox-beta-de.rb
@@ -1,10 +1,10 @@
 cask :v1 => 'firefox-beta-de' do
-  version '32.0b1'
-  sha256 'f1476898076d9ed5e207e5933b16f7c5fdb13681a2bcacd3c2fefa7c58241553'
+  version '36.0b1'
+  sha256 'bca3bfed105d7749d4ecb88072897bb6947bbc69dbcca75e14186733077ce2e6'
 
   url "https://download.mozilla.org/?product=firefox-#{version}&os=osx&lang=de"
   homepage 'https://www.mozilla.org/de/firefox/beta/'
-  license :oss
+  license :mpl
 
   app 'Firefox.app'
 end
diff --git a/Casks/firefox-beta-gb.rb b/Casks/firefox-beta-gb.rb
index 4f5debdfe..e890fd526 100644
--- a/Casks/firefox-beta-gb.rb
+++ b/Casks/firefox-beta-gb.rb
@@ -1,10 +1,10 @@
 cask :v1 => 'firefox-beta-gb' do
-  version '32.0b1'
-  sha256 'a7e982c089a60f4287f273f6241bd3e005cdadb8c8593d85e6d95a7f132551f3'
+  version '36.0b1'
+  sha256 '8ef105c26f697895901a58b6a212b5390648704e9b1a4b0108473cdc12da7da0'
 
   url "https://download.mozilla.org/?product=firefox-#{version}-SSL&os=osx&lang=en-GB"
   homepage 'https://www.mozilla.org/en-GB/firefox/beta/'
-  license :oss
+  license :mpl
 
   app 'Firefox.app'
 end
diff --git a/Casks/firefox-beta-ja.rb b/Casks/firefox-beta-ja.rb
index d7f4a1a66..9cb715c6f 100644
--- a/Casks/firefox-beta-ja.rb
+++ b/Casks/firefox-beta-ja.rb
@@ -1,10 +1,10 @@
 cask :v1 => 'firefox-beta-ja' do
-  version '32.0b1'
-  sha256 'ea4ef1545a6e628d81e4d391c95a648af3f8a0f164e615851d06b67bc266357a'
+  version '36.0b1'
+  sha256 '8e818c1e34274fbaf3f8747bb1ba09aa5bd7d8783a609defad386b13f68ea45e'
 
   url "https://download.mozilla.org/?product=firefox-#{version}&os=osx&lang=ja-JP-mac"
-  homepage 'http://www.mozilla.org/ja/firefox/channel/#beta'
-  license :oss
+  homepage 'http://www.mozilla.org/ja/firefox/channel/beta'
+  license :mpl
 
   app 'Firefox.app'
 end
diff --git a/Casks/firefox-beta.rb b/Casks/firefox-beta.rb
index 335dcc9eb..b8629e742 100644
--- a/Casks/firefox-beta.rb
+++ b/Casks/firefox-beta.rb
@@ -1,10 +1,10 @@
 cask :v1 => 'firefox-beta' do
-  version '32.0b1'
-  sha256 'ed09118e2f0d55b22d64e5da10bf2de1207613f05d0602f3cf050a27e504a5bd'
+  version '36.0b1'
+  sha256 'cc6dca831359d8cdb855d26c41850ae3c0f9b19db7567f3fedcec146d63fc628'
 
   url "https://download.mozilla.org/?product=firefox-#{version}&os=osx&lang=en-US"
   homepage 'https://www.mozilla.org/en-US/firefox/beta/'
-  license :oss
+  license :mpl
 
   app 'Firefox.app'
 end
diff --git a/Casks/firefox-esr-cn.rb b/Casks/firefox-esr-cn.rb
index 3f7a8241d..031327057 100644
--- a/Casks/firefox-esr-cn.rb
+++ b/Casks/firefox-esr-cn.rb
@@ -3,8 +3,8 @@ cask :v1 => 'firefox-esr-cn' do
   sha256 '9182216395abb12464a527306cbe53e14555d565c302752290696cbfe44f925b'
 
   url "http://ftp.mozilla.org/pub/mozilla.org/firefox/releases/latest-esr/mac/zh-CN/Firefox%20#{version}esr.dmg"
-  homepage 'https://www.mozilla.org/zh-CN/firefox/desktop/'
-  license :oss
+  homepage 'https://www.mozilla.org/zh-CN/firefox/organizations/'
+  license :mpl
 
   app 'Firefox.app'
 end
diff --git a/Casks/firefox-esr-us.rb b/Casks/firefox-esr-us.rb
index fe1b7e79b..0f36bb67b 100644
--- a/Casks/firefox-esr-us.rb
+++ b/Casks/firefox-esr-us.rb
@@ -1,10 +1,10 @@
 cask :v1 => 'firefox-esr-us' do
-  version '31.0'
-  sha256 'a6fe27ebcafcf130aa906ab4a93a7898b81ea7d69f13cc24eeaba57a47fe8f4d'
+  version '31.4.0'
+  sha256 '20f0cf57c21181946c621b20f2758611a9c59d57ab25d4c991cde3f25dee404d'
 
   url "https://download.mozilla.org/?product=firefox-#{version}esr-SSL&os=osx&lang=en-US"
-  homepage 'https://www.mozilla.org/en-US/firefox/organizations/faq/'
-  license :oss
+  homepage 'https://www.mozilla.org/en-US/firefox/organizations/'
+  license :mpl
 
   app 'Firefox.app'
 end
diff --git a/Casks/firefox-nightly-ja.rb b/Casks/firefox-nightly-ja.rb
index 13bfe892e..7704e867f 100644
--- a/Casks/firefox-nightly-ja.rb
+++ b/Casks/firefox-nightly-ja.rb
@@ -1,10 +1,10 @@
 cask :v1 => 'firefox-nightly-ja' do
-  version '36.0a1'
-  sha256 '7a80d602e7a59e90577a94a9dbe3290fa2a56e660f73c937d34555c418fed847'
+  version '38.0a1'
+  sha256 '666a6a38572f0d452458f0da0992636b09ce3cb9f42288cffcc3450085f0f4fe'
 
   url "https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-central-l10n/firefox-#{version}.ja-JP-mac.mac.dmg"
   homepage 'https://nightly.mozilla.org/'
-  license :oss
+  license :mpl
 
   app 'FirefoxNightly.app'
 end
diff --git a/Casks/firefox-nightly.rb b/Casks/firefox-nightly.rb
index a1983327f..a4df20f25 100644
--- a/Casks/firefox-nightly.rb
+++ b/Casks/firefox-nightly.rb
@@ -1,10 +1,10 @@
 cask :v1 => 'firefox-nightly' do
-  version :latest
-  sha256 :no_check
+  version '38.0a1'
+  sha256 'd0a1f9bf78de8c2b21e0e3fc90e878744699ef086e6dfa14e9551b4e1a618b98'
 
-  url 'https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-trunk/firefox-37.0a1.en-US.mac.dmg'
+  url "https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-trunk/firefox-#{version}.en-US.mac.dmg"
   homepage 'https://nightly.mozilla.org/'
-  license :oss
+  license :mpl
 
   app 'FirefoxNightly.app'
 end