diff --git a/pkgs/development/python-modules/traits/default.nix b/pkgs/development/python-modules/traits/default.nix
index e4e82db9e446..2d88fb3221aa 100644
--- a/pkgs/development/python-modules/traits/default.nix
+++ b/pkgs/development/python-modules/traits/default.nix
@@ -9,22 +9,16 @@
 
 buildPythonPackage rec {
   pname = "traits";
-  version = "6.2.0";
-  disabled = isPy27; # setup.py no longer py3 compat
+  version = "6.3.0";
+  disabled = isPy27;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "16fa1518b0778fd53bf0547e6a562b1787bf68c8f6b7995a13bd1902529fdb0c";
+    sha256 = "770241df047feb9e3ed4c26a36c2468a5b754e6082a78eeb737f058bd45344f5";
   };
 
-  # Use pytest because its easier to discover tests
-  buildInputs = [ pytest ];
   propagatedBuildInputs = [ numpy ];
 
-  checkPhase = ''
-    py.test $out/${python.sitePackages}
-  '';
-
   # Test suite is broken for 3.x on latest release
   # https://github.com/enthought/traits/issues/187
   # https://github.com/enthought/traits/pull/188
@@ -34,7 +28,7 @@ buildPythonPackage rec {
   meta = with lib; {
     description = "Explicitly typed attributes for Python";
     homepage = "https://pypi.python.org/pypi/traits";
-    license = "BSD";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ ];
   };
-
 }