diff --git a/pkgs/development/python-modules/parameterizedtestcase/default.nix b/pkgs/development/python-modules/parameterizedtestcase/default.nix
index 20e662cd66d6..9d277af8d1a9 100644
--- a/pkgs/development/python-modules/parameterizedtestcase/default.nix
+++ b/pkgs/development/python-modules/parameterizedtestcase/default.nix
@@ -27,5 +27,6 @@ buildPythonPackage rec {
     homepage = "https://github.com/msabramo/python_unittest_parameterized_test_case";
     license = licenses.mit;
     maintainers = with maintainers; [ dotlambda ];
+    broken = python.isPy3k; # uses use_2to3
   };
 }