diff --git a/Casks/webkit-nightly.rb b/Casks/webkit-nightly.rb
index 1290bd906..07c817c4e 100644
--- a/Casks/webkit-nightly.rb
+++ b/Casks/webkit-nightly.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'webkit-nightly' do
-  version 'r191351'
-  sha256 '36938103d24b4d18d3959322f744a83454966c603ab3304e1866f162a1b505bc'
+  version 'r191501'
+  sha256 'a065d9adeea5eae2bcfb6db00861e2c13f802ceec82e3de64d21146e3654d0f2'
 
   url "http://builds.nightly.webkit.org/files/trunk/mac/WebKit-SVN-#{version}.dmg"
   name 'WebKit Nightly'