diff --git a/Formula/x264.rb b/Formula/x264.rb
index 52c4e8bbbd..e4c27ea584 100644
--- a/Formula/x264.rb
+++ b/Formula/x264.rb
@@ -3,14 +3,14 @@ require 'formula'
 class X264 < Formula
   homepage "http://www.videolan.org/developers/x264.html"
   # the latest commit on the stable branch
-  url "http://git.videolan.org/git/x264.git", :revision => "d7e689680023e327de7e052e01e7faee30135799"
-  version "r2412"
+  url "http://git.videolan.org/git/x264.git", :revision => "af8e768e2bd3b4398bca033998f83b0eb8874914"
+  version "r2438"
   head "http://git.videolan.org/git/x264.git"
 
   devel do
     # the latest commit on the master branch
-    url "http://git.videolan.org/git/x264.git", :revision => "a5831aa256b3161f898d2577d2eb8daa838d88d2"
-    version "r2431"
+    url "http://git.videolan.org/git/x264.git", :revision => "ea0ca51e94323318b95bd8b27b7f9438cdcf4d9e"
+    version "r2453"
   end
 
   bottle do