diff --git a/Casks/firefox-fr.rb b/Casks/firefox-fr.rb
index 3ff3ef50f..63b1b7866 100644
--- a/Casks/firefox-fr.rb
+++ b/Casks/firefox-fr.rb
@@ -1,7 +1,7 @@
 class FirefoxFr < Cask
   url 'https://download.mozilla.org/?product=firefox-latest&os=osx&lang=fr'
   homepage 'http://www.mozilla.org/fr/firefox/new/'
-  version 'lastest'
+  version 'latest'
   sha256 :no_check
   link 'Firefox.app'
 end
diff --git a/Casks/firefox-nightly.rb b/Casks/firefox-nightly.rb
index 7da77c8f2..ccc52a971 100644
--- a/Casks/firefox-nightly.rb
+++ b/Casks/firefox-nightly.rb
@@ -1,7 +1,7 @@
 class FirefoxNightly < Cask
   url 'http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-trunk/firefox-33.0a1.en-US.mac.dmg'
   homepage 'https://nightly.mozilla.org/'
-  version '33.0a1'
+  version 'latest'
   sha256 :no_check
   link 'FirefoxNightly.app'
 end
diff --git a/Casks/firefox-ux.rb b/Casks/firefox-ux.rb
index 717482359..6bb596dc7 100644
--- a/Casks/firefox-ux.rb
+++ b/Casks/firefox-ux.rb
@@ -1,7 +1,7 @@
 class FirefoxUx < Cask
   url 'https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-ux/firefox-32.0a1.en-US.mac.dmg'
   homepage 'http://people.mozilla.org/~jwein/ux-nightly/'
-  version '32.0a1'
+  version 'latest'
   sha256 :no_check
   link 'FirefoxUX.app'
 end
diff --git a/Casks/google-chrome-beta.rb b/Casks/google-chrome-beta.rb
index bae5706a0..b0ce49fde 100644
--- a/Casks/google-chrome-beta.rb
+++ b/Casks/google-chrome-beta.rb
@@ -1,7 +1,7 @@
 class GoogleChromeBeta < Cask
   url 'http://dl.google.com/chrome/mac/beta/googlechrome.dmg'
   homepage 'https://www.google.com/intl/en/chrome/browser/beta.html'
-  version 'beta-channel'
+  version 'latest'
   sha256 :no_check
   link 'Google Chrome.app'
 end
diff --git a/Casks/google-chrome-dev.rb b/Casks/google-chrome-dev.rb
index c43286146..141a39251 100644
--- a/Casks/google-chrome-dev.rb
+++ b/Casks/google-chrome-dev.rb
@@ -1,7 +1,7 @@
 class GoogleChromeDev < Cask
   url 'http://dl.google.com/chrome/mac/dev/googlechrome.dmg'
   homepage 'https://www.google.com/chrome/'
-  version 'dev-channel'
+  version 'latest'
   sha256 :no_check
   link 'Google Chrome.app'
 end
diff --git a/Casks/papers2.rb b/Casks/papers2.rb
index cd670a2c5..1f62829e1 100644
--- a/Casks/papers2.rb
+++ b/Casks/papers2.rb
@@ -1,7 +1,7 @@
 class Papers2 < Cask
   url 'http://www.papersapp.com/papers2/download'
   homepage 'http://www.papersapp.com/mac/'
-  version '2'
+  version 'latest'
   sha256 :no_check
   link 'Papers2.app'
 end