diff --git a/Formula/czmq.rb b/Formula/czmq.rb
index 11980b254c6..eaf8ad81463 100644
--- a/Formula/czmq.rb
+++ b/Formula/czmq.rb
@@ -2,8 +2,8 @@ require 'formula'
 
 class Czmq < Formula
   homepage 'http://czmq.zeromq.org/'
-  url 'http://download.zeromq.org/czmq-1.2.0.tar.gz'
-  sha1 '826830df72443edb4646283cd5b490683af6df2a'
+  url 'http://download.zeromq.org/czmq-1.3.1.tar.gz'
+  sha1 '73dea800cf556d66d5a4630bb7f99bd313cc30dc'
 
   option :universal