diff --git a/pkgs/development/python-modules/oset/default.nix b/pkgs/development/python-modules/oset/default.nix
new file mode 100644
index 00000000000..aa435b403e8
--- /dev/null
+++ b/pkgs/development/python-modules/oset/default.nix
@@ -0,0 +1,19 @@
+{ stdenv, buildPythonPackage, fetchPypi }:
+
+buildPythonPackage rec {
+  pname = "oset";
+  version = "0.1.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "017rr1m72s2fh9bmz5vrvc5mshczgzisi5894v9zkvvfr7gdf7sc";
+  };
+
+  doCheck = false;
+
+  meta = {
+    description = "Ordered set";
+    license = stdenv.lib.licenses.psfl;
+  };
+
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 110f2873a6b..5ad6730424c 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -5725,6 +5725,7 @@ in {
 
   odfpy = callPackage ../development/python-modules/odfpy { };
 
+  oset = callPackage ../development/python-modules/oset { };
 
   pamela = buildPythonPackage rec {
     name = "pamela-${version}";