diff --git a/pkgs/development/python-modules/rubymarshal/default.nix b/pkgs/development/python-modules/rubymarshal/default.nix
index d2b485ee4f06..0e2ada2d063c 100644
--- a/pkgs/development/python-modules/rubymarshal/default.nix
+++ b/pkgs/development/python-modules/rubymarshal/default.nix
@@ -8,13 +8,13 @@
 
 buildPythonPackage rec {
   pname = "rubymarshal";
-  version = "1.2.7";
+  version = "1.2.8";
   format = "setuptools";
   disabled = !isPy3k;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "94aa84fa42393f773c8215fab679bd3b72bbdb9f7931643d3672184cde9981d9";
+    sha256 = "sha256-8+8KxCjsawlFXd1Bgq/8jY0TSB9l8UHaNMkcqfoz7hs=";
   };
 
   propagatedBuildInputs = [ hypothesis ];