diff --git a/pkgs/development/python-modules/orderedset/default.nix b/pkgs/development/python-modules/orderedset/default.nix
new file mode 100644
index 000000000000..44a6a9e6b8d9
--- /dev/null
+++ b/pkgs/development/python-modules/orderedset/default.nix
@@ -0,0 +1,18 @@
+{ stdenv, buildPythonPackage, fetchPypi }:
+
+buildPythonPackage rec {
+  pname = "orderedset";
+  version = "2.0.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "11643qr12ypxfffcminlsgl9xz751b2d0pnjl6zn8vfhxddjr57f";
+  };
+
+  meta = with stdenv.lib; {
+    description = "An Ordered Set implementation in Cython";
+    homepage = https://pypi.python.org/pypi/orderedset;
+    license = licenses.bsd3;
+    maintainers = maintainers.jtojnar;
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index ceb92f292183..d38b6e560a39 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -8828,6 +8828,8 @@ in {
     };
   };
 
+  orderedset = callPackage ../development/python-modules/orderedset { };
+
   python-otr = buildPythonPackage rec {
     name = "${pname}-${version}";
     pname = "python-otr";