diff --git a/Casks/webkit-nightly.rb b/Casks/webkit-nightly.rb
index 73e791902..6e53cc827 100644
--- a/Casks/webkit-nightly.rb
+++ b/Casks/webkit-nightly.rb
@@ -1,6 +1,6 @@
 cask 'webkit-nightly' do
-  version 'r194284'
-  sha256 'c06cae8dd3d9ecacf89a440a19ac5fda5587695c5c6f5e58e41eea40ba685827'
+  version 'r198607'
+  sha256 '7ed00fcc62a4f8ba334df551eba9e08cf54e8bf6abce2765b785061cc0c3e93c'
 
   url "http://builds.nightly.webkit.org/files/trunk/mac/WebKit-SVN-#{version}.dmg"
   name 'WebKit Nightly'