diff --git a/pkgs/development/python-modules/multiset/default.nix b/pkgs/development/python-modules/multiset/default.nix
new file mode 100644
index 000000000000..5cc159dc2059
--- /dev/null
+++ b/pkgs/development/python-modules/multiset/default.nix
@@ -0,0 +1,27 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, setuptools_scm
+, pytestrunner
+, pytest
+}:
+
+buildPythonPackage rec {
+  pname = "multiset";
+  version = "2.1.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "4801569c08bfcecfe7b0927b17f079c90f8607aca8fecaf42ded92b737162bc7";
+  };
+
+  buildInputs = [ setuptools_scm pytestrunner ];
+  checkInputs = [ pytest ];
+
+  meta = with lib; {
+    description = "An implementation of a multiset";
+    homepage = https://github.com/wheerd/multiset;
+    license = licenses.mit;
+    maintainers = [ maintainers.costrouc ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index eb0334d8b8f7..bb273cbdb4fb 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -430,6 +430,8 @@ in {
     mpi = pkgs.openmpi;
   };
 
+  multiset = callPackage ../development/python-modules/multiset { };
+
   mwclient = callPackage ../development/python-modules/mwclient { };
 
   mwoauth = callPackage ../development/python-modules/mwoauth { };