diff --git a/pkgs/development/python-modules/unicode-rbnf/default.nix b/pkgs/development/python-modules/unicode-rbnf/default.nix
new file mode 100644
index 000000000000..934f51c67ddf
--- /dev/null
+++ b/pkgs/development/python-modules/unicode-rbnf/default.nix
@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+
+# build-system
+, setuptools
+
+# tests
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "unicode-rbnf";
+  version = "1.0.0";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "rhasspy";
+    repo = "unicode-rbnf";
+    rev = "v${version}";
+    hash = "sha256-xwnfqWwQJKCJ4G+8eVaySTJAHxhwKYAqLHaCsxtBIl0=";
+  };
+
+  nativeBuildInputs = [
+    setuptools
+  ];
+
+  pythonImportsCheck = [
+    "unicode_rbnf"
+  ];
+
+  nativeCheckInputs = [
+    pytestCheckHook
+  ];
+
+  meta = with lib; {
+    changelog = "https://github.com/rhasspy/unicode-rbnf/v${version}/master/CHANGELOG.md";
+    description = "A pure Python implementation of ICU's rule-based number format engine";
+    homepage = "https://github.com/rhasspy/unicode-rbnf";
+    license = licenses.mit;
+    maintainers = with maintainers; [ hexa ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 075586b9db5c..4ac9086431d5 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -15451,6 +15451,8 @@ self: super: with self; {
 
   unicodedata2 = callPackage ../development/python-modules/unicodedata2 { };
 
+  unicode-rbnf = callPackage ../development/python-modules/unicode-rbnf { };
+
   unicode-slugify = callPackage ../development/python-modules/unicode-slugify { };
 
   unicorn = callPackage ../development/python-modules/unicorn {