diff --git a/Library/Formula/tmux.rb b/Library/Formula/tmux.rb
index f220851b197f..41e5ce2757a8 100644
--- a/Library/Formula/tmux.rb
+++ b/Library/Formula/tmux.rb
@@ -1,8 +1,8 @@
 require 'formula'
 
 class Tmux <Formula
-  url 'http://downloads.sourceforge.net/tmux/tmux-1.2.tar.gz'
-  md5 '748fbe7bb5f86812e19bd6005ff21a5a'
+  url 'http://downloads.sourceforge.net/tmux/tmux-1.3.tar.gz'
+  md5 '96e60cb206de2db0610b9fb6a64c2251'
   homepage 'http://tmux.sourceforge.net'
 
   depends_on 'libevent'