diff --git a/pkgs/development/python-modules/numtraits/default.nix b/pkgs/development/python-modules/numtraits/default.nix
deleted file mode 100644
index 624f32fd337..00000000000
--- a/pkgs/development/python-modules/numtraits/default.nix
+++ /dev/null
@@ -1,32 +0,0 @@
-{ lib
-, buildPythonPackage
-, fetchPypi
-, pytest
-, six
-, numpy
-, traitlets
-}:
-
-buildPythonPackage rec {
-  pname = "numtraits";
-  version = "0.2";
-
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "2fca9a6c9334f7358ef1a3e2e64ccaa6a479fc99fc096910e0d5fbe8edcdfd7e";
-  };
-
-  checkInputs = [ pytest ];
-  propagatedBuildInputs = [ six numpy traitlets];
-
-  checkPhase = ''
-    py.test
-  '';
-
-  meta = {
-    description = "Numerical traits for Python objects";
-    license = lib.licenses.bsd2;
-    maintainers = with lib.maintainers; [ fridh ];
-    homepage = "https://github.com/astrofrog/numtraits";
-  };
-}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index b2629d8bb38..04e87616e90 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4712,8 +4712,6 @@ in {
 
   numpy-stl = callPackage ../development/python-modules/numpy-stl { };
 
-  numtraits = callPackage ../development/python-modules/numtraits { };
-
   nunavut = callPackage ../development/python-modules/nunavut { };
 
   nvchecker = callPackage ../development/python-modules/nvchecker { };