diff --git a/Casks/firefox.rb b/Casks/firefox.rb
index 316458ff4..d2319f710 100644
--- a/Casks/firefox.rb
+++ b/Casks/firefox.rb
@@ -1,5 +1,5 @@
 class Firefox < Cask
-  url 'http://releases.mozilla.org/pub/mozilla.org/firefox/releases/15.0.1/mac/en-US/Firefox%2015.0.1.dmg'
+  url 'http://download.cdn.mozilla.net/pub/mozilla.org/firefox/releases/16.0.1/mac/en-US/Firefox%2016.0.1.dmg'
   homepage 'http://www.mozilla.org/en-US/firefox/'
-  version '15.0.1'
+  version '16.0.1'
 end