diff --git a/pkgs/development/python-modules/regex/default.nix b/pkgs/development/python-modules/regex/default.nix
index 0e58aafc1b6a..a1349ae5c36d 100644
--- a/pkgs/development/python-modules/regex/default.nix
+++ b/pkgs/development/python-modules/regex/default.nix
@@ -6,11 +6,11 @@
 
 buildPythonPackage rec {
   pname = "regex";
-  version = "2016.11.18";
+  version = "2017.12.12";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "126ds2b355n3pgl7brshhscpxn14ycs0yznzl8k4akj4sps1i6c6";
+    sha256 = "ee069308c2757e565cc2b6f417ba5288e76cfe4c1764b6826063f4fbd53219d7";
   };
 
   meta = {