diff --git a/pkgs/development/python-modules/sphinxcontrib-mscgen/default.nix b/pkgs/development/python-modules/sphinxcontrib-mscgen/default.nix
new file mode 100644
index 000000000000..0a283dd81a4d
--- /dev/null
+++ b/pkgs/development/python-modules/sphinxcontrib-mscgen/default.nix
@@ -0,0 +1,39 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonOlder
+, sphinx
+, mscgen
+}:
+
+buildPythonPackage rec {
+  pname = "sphinxcontrib-mscgen";
+  version = "0.6";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-AXfSWRq3CepT/jNOgHxiYT7vkdKZejPu/LeUqxZ8T5A=";
+  };
+
+  propagatedBuildInputs = [
+    mscgen
+    sphinx
+  ];
+
+  # There are no unit tests
+  doCheck = false;
+
+  pythonImportsCheck = [
+    "sphinxcontrib.mscgen"
+  ];
+
+  meta = with lib; {
+    description = "Sphinx extension using mscgen to render diagrams";
+    homepage = "https://github.com/sphinx-contrib/mscgen";
+    license = licenses.bola11;
+    maintainers = with maintainers; [ drupol ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index eb4600bcaaec..c0a60d799ba8 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -10396,6 +10396,10 @@ in {
 
   sphinxcontrib-katex = callPackage ../development/python-modules/sphinxcontrib-katex { };
 
+  sphinxcontrib-mscgen = callPackage ../development/python-modules/sphinxcontrib-mscgen {
+    inherit (pkgs) mscgen;
+  };
+
   sphinxcontrib-nwdiag = callPackage ../development/python-modules/sphinxcontrib-nwdiag { };
 
   sphinxcontrib_newsfeed = callPackage ../development/python-modules/sphinxcontrib_newsfeed { };