diff --git a/pkgs/development/python-modules/attacut/default.nix b/pkgs/development/python-modules/attacut/default.nix
new file mode 100644
index 000000000000..70e8a98ccfd4
--- /dev/null
+++ b/pkgs/development/python-modules/attacut/default.nix
@@ -0,0 +1,73 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  fetchpatch,
+
+  setuptools,
+
+  pytestCheckHook,
+
+  docopt,
+  fire,
+  numpy,
+  python-crfsuite,
+  pyyaml,
+  six,
+  ssg,
+  torch,
+}:
+
+buildPythonPackage rec {
+  pname = "attacut";
+  version = "1.1.0-dev";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "PyThaiNLP";
+    repo = "attacut";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-x3JJC1Xd+tsOAHJEHGzIrhIrNGSvLSanAFc7+uXb2Kk=";
+  };
+
+  # no more need, see patch...
+  postPatch = ''
+    sed -i "/nptyping>=/d" setup.py
+  '';
+
+  patches = [
+    (fetchpatch {
+      name = "fix-nptyping-deprecated-array.patch";
+      url = "https://github.com/PyThaiNLP/attacut/commit/a707297b3f08a015d32d8ac241aa8cb11128cbd4.patch";
+      includes = [ "attacut/evaluation.py" ];
+      hash = "sha256-k2DJPwiH1Fyf5u6+zavx0bankCXsJVZrw1MGcf8ZL+M=";
+    })
+  ];
+
+  build-system = [ setuptools ];
+
+  dependencies = [
+    docopt
+    fire
+    numpy
+    python-crfsuite
+    pyyaml
+    six
+    ssg
+    torch
+  ];
+
+  nativeCheckInputs = [ pytestCheckHook ];
+
+  pytestFlagsArray = [ "tests/*" ];
+
+  pythonImportsCheck = [ "attacut" ];
+
+  meta = with lib; {
+    description = "A Fast and Accurate Neural Thai Word Segmenter";
+    homepage = "https://github.com/PyThaiNLP/attacut";
+    license = licenses.mit;
+    maintainers = with maintainers; [ vizid ];
+    mainProgram = "attacut-cli";
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 632a66425b20..8bc827c26504 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -925,6 +925,8 @@ self: super: with self; {
 
   atsim-potentials = callPackage ../development/python-modules/atsim-potentials { };
 
+  attacut = callPackage ../development/python-modules/attacut { };
+
   attrdict = callPackage ../development/python-modules/attrdict { };
 
   attrs = callPackage ../development/python-modules/attrs { };