diff --git a/pkgs/development/python-modules/ruamel_ordereddict/default.nix b/pkgs/development/python-modules/ruamel_ordereddict/default.nix
index fa7bd815b68..7dec5bb54ca 100644
--- a/pkgs/development/python-modules/ruamel_ordereddict/default.nix
+++ b/pkgs/development/python-modules/ruamel_ordereddict/default.nix
@@ -7,12 +7,12 @@
 
 buildPythonPackage rec {
   pname = "ruamel.ordereddict";
-  version = "0.4.9";
+  version = "0.4.13";
   disabled = isPy3k || isPyPy;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1xmkl8v9l9inm2pyxgc1fm5005yxm7fkd5gv74q7lj1iy5qc8n3h";
+    sha256 = "bf0a198c8ce5d973c24e5dba12d3abc254996788ca6ad8448eabc6aa710db149";
   };
 
   meta = with stdenv.lib; {