diff --git a/Casks/webkit-nightly.rb b/Casks/webkit-nightly.rb
index 07c817c4e..b90e33700 100644
--- a/Casks/webkit-nightly.rb
+++ b/Casks/webkit-nightly.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'webkit-nightly' do
-  version 'r191501'
-  sha256 'a065d9adeea5eae2bcfb6db00861e2c13f802ceec82e3de64d21146e3654d0f2'
+  version 'r191547'
+  sha256 '4e4fc4458885c133417bf350ef3569a438035e50bc7b43543b0d07e449db6817'
 
   url "http://builds.nightly.webkit.org/files/trunk/mac/WebKit-SVN-#{version}.dmg"
   name 'WebKit Nightly'