diff --git a/pkgs/development/python-modules/collections-extended/default.nix b/pkgs/development/python-modules/collections-extended/default.nix
new file mode 100644
index 000000000000..52f73a5554a5
--- /dev/null
+++ b/pkgs/development/python-modules/collections-extended/default.nix
@@ -0,0 +1,38 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pythonOlder
+, poetry-core
+, pytestCheckHook
+}:
+buildPythonPackage rec {
+  pname = "collections-extended";
+  version = "2.0.0";
+  format = "pyproject";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "mlenzen";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256:1qcr1q49a134b122rpldjiim1fsl32gxs5fpj3232nyb05r68haz";
+  };
+
+  nativeBuildInputs = [
+    poetry-core
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "collections_extended" ];
+
+  meta = with lib; {
+    homepage = "https://github.com/mlenzen/collections-extended";
+    description = "Extra Python Collections - bags (multisets), setlists (unique list / indexed set), RangeMap and IndexedDict";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ exarkun ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 648a94ff4211..18e6525559e9 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1613,6 +1613,8 @@ in {
 
   colander = callPackage ../development/python-modules/colander { };
 
+  collections-extended = callPackage ../development/python-modules/collections-extended { };
+
   colorama = callPackage ../development/python-modules/colorama { };
 
   colorcet = callPackage ../development/python-modules/colorcet { };