diff --git a/Casks/emacs-nightly.rb b/Casks/emacs-nightly.rb
index d20511192..471af3e9b 100644
--- a/Casks/emacs-nightly.rb
+++ b/Casks/emacs-nightly.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'emacs-nightly' do
-  version '2015-12-08_01-41-22-6148555'
-  sha256 '35e997839237b38a496bec308933784e84ba6ad5f469577b545a8066d4e84a9e'
+  version '2015-12-09_01-41-29-6148555'
+  sha256 'ad4945bf88ae13bbe629806622aae30127067980ad03bb4881798564343b0024'
 
   url "http://emacsformacosx.com/emacs-builds/Emacs-#{version}-universal.dmg"
   name 'Emacs for Mac OS X'