diff --git a/pkgs/development/python-modules/fxrays/default.nix b/pkgs/development/python-modules/fxrays/default.nix
new file mode 100644
index 000000000000..b7859e624117
--- /dev/null
+++ b/pkgs/development/python-modules/fxrays/default.nix
@@ -0,0 +1,42 @@
+{
+  lib,
+  python,
+  buildPythonPackage,
+  fetchFromGitHub,
+  setuptools,
+  cython,
+}:
+
+buildPythonPackage rec {
+  pname = "fxrays";
+  version = "1.3.6";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "3-manifolds";
+    repo = "FXrays";
+    tag = "${version}_as_released";
+    hash = "sha256-IwEY54zDXqMci7WRvhueDJidTsbMwv6eqQSGZzFOtnQ";
+  };
+
+  build-system = [
+    setuptools
+    cython
+  ];
+
+  pythonImportsCheck = [ "FXrays" ];
+
+  checkPhase = ''
+    runHook preCheck
+    ${python.interpreter} -m FXrays.test
+    runHook postCheck
+  '';
+
+  meta = {
+    description = "Computes extremal rays of polyhedral cones with filtering";
+    changelog = "https://github.com/3-manifolds/FXrays/releases/tag/${src.tag}";
+    homepage = "https://github.com/3-manifolds/FXrays";
+    license = lib.licenses.gpl2Plus;
+    maintainers = with lib.maintainers; [ noiioiu ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 322c7740bd41..0864b3030c3a 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -5432,6 +5432,8 @@ self: super: with self; {
 
   fx2 = callPackage ../development/python-modules/fx2 { };
 
+  fxrays = callPackage ../development/python-modules/fxrays { };
+
   fyta-cli = callPackage ../development/python-modules/fyta-cli { };
 
   g2pkk = callPackage ../development/python-modules/g2pkk { };