diff --git a/pkgs/development/python-modules/cython-test-exception-raiser/default.nix b/pkgs/development/python-modules/cython-test-exception-raiser/default.nix
new file mode 100644
index 000000000000..e6f3f8b451b3
--- /dev/null
+++ b/pkgs/development/python-modules/cython-test-exception-raiser/default.nix
@@ -0,0 +1,38 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, cython
+, setuptools
+, wheel
+}:
+
+buildPythonPackage rec {
+  pname = "cython-test-exception-raiser";
+  version = "1.0.2";
+  format = "pyproject";
+
+  src = fetchFromGitHub {
+    owner = "twisted";
+    repo = "cython-test-exception-raiser";
+    rev = "v${version}";
+    hash = "sha256-fwMq0pOrFUJnPndH/a6ghoo6mlcVSxtsWazqE9mCx3M=";
+  };
+
+  nativeBuildInputs = [
+    cython
+    setuptools
+    wheel
+  ];
+
+  pythonImportsCheck = [
+    "cython_test_exception_raiser"
+  ];
+
+  meta = with lib; {
+    description = "Testing only. A cython simple extension which is used as helper for twisted/twisted Failure tests";
+    homepage = "https://github.com/twisted/cython-test-exception-raiser";
+    changelog = "https://github.com/twisted/cython-test-exception-raiser/blob/${src.rev}/CHANGELOG.rst";
+    license = with licenses; [ publicDomain mit ];
+    maintainers = with maintainers; [ ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 7066f275e20f..55becaba3e44 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2453,6 +2453,8 @@ self: super: with self; {
     patches = [ ];
   });
 
+  cython-test-exception-raiser = callPackage ../development/python-modules/cython-test-exception-raiser { };
+
   cytoolz = callPackage ../development/python-modules/cytoolz { };
 
   dacite = callPackage ../development/python-modules/dacite { };