diff --git a/Casks/tunnelblick-beta.rb b/Casks/tunnelblick-beta.rb
index 1ab01d276..d0cc4ed38 100644
--- a/Casks/tunnelblick-beta.rb
+++ b/Casks/tunnelblick-beta.rb
@@ -2,6 +2,6 @@ class TunnelblickBeta < Cask
   url 'http://downloads.sourceforge.net/project/tunnelblick/All%20files/Tunnelblick_3.4beta20.dmg'
   homepage 'https://code.google.com/p/tunnelblick/'
   version '3.4beta20'
-  sha1 '1e3b716e05981f242f0933ffc6f7084cf5e339bd'
+  sha256 'f6a62f0a59752303627f1c0f545d26f3d8fc39d036557b69c7f66dbed13def69'
   link 'Tunnelblick.app'
 end