diff --git a/Formula/v8.rb b/Formula/v8.rb
index 0a8e69a0b5..e14f0f3cb0 100644
--- a/Formula/v8.rb
+++ b/Formula/v8.rb
@@ -1,13 +1,20 @@
 require 'formula'
 
+# When trunk is 3.x, then 3.x is devel and 3.(x-1)
+# is stable.
 # https://code.google.com/p/v8/issues/detail?id=2545
 # http://omahaproxy.appspot.com/
 
 class V8 < Formula
   homepage 'http://code.google.com/p/v8/'
-  url 'https://github.com/v8/v8/archive/3.20.7.tar.gz'
+  url 'https://github.com/v8/v8/archive/3.19.18.4.tar.gz'
   sha1 '3d7cbebcd1b953f07d87d6111377aeff4ebda1fa'
 
+  devel do
+    url 'https://github.com/v8/v8/archive/3.20.7.tar.gz'
+    sha1 '3d7cbebcd1b953f07d87d6111377aeff4ebda1fa'
+  end
+
   head 'https://github.com/v8/v8.git'
 
   option 'with-readline', 'Use readline instead of libedit'