diff --git a/pkgs/development/python-modules/serpent/default.nix b/pkgs/development/python-modules/serpent/default.nix
index 887d0c54424..6a3d60098cb 100644
--- a/pkgs/development/python-modules/serpent/default.nix
+++ b/pkgs/development/python-modules/serpent/default.nix
@@ -10,11 +10,11 @@
 
 buildPythonPackage rec {
   pname = "serpent";
-  version = "1.27";
+  version = "1.28";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "6f8dc4317fb5b5a9629b5e518846bc9fee374b8171533726dc68df52b36ee912";
+    sha256 = "f306336ca09aa38e526f3b03cab58eb7e45af09981267233167bcf3bfd6436ab";
   };
 
   propagatedBuildInputs = lib.optionals (isPy27 || isPy33) [ enum34 ];