diff --git a/README.rst b/README.rst
index 626465b..b0d3c42 100644
--- a/README.rst
+++ b/README.rst
@@ -7,17 +7,19 @@ LimeTr
 :code:`limetr`, read as "lime tree", is a Python package solves mixed effects models with linear random effects.
 Moreover the package also provides robust regression option called "trimming".
 
-Install
--------
+Installation
+------------
 
-The package can be installed through ``pip``,
+``limetr>=0.1.0`` requires python 3.10 or higher, it can be install via
 
-.. code-block:: bash
+.. code:: bash
 
-    pip install limetr
+    pip install limetr>=0.1.0
 
-Or you could install from source, by clone this repository and do,
+For developers, you can clone the repository and install the package in the development mode.
 
-.. code-block:: bash
+.. code:: bash
 
-    python setup.py install
+    git clone https://kgithub.com/zhengp0/xspline.git
+    cd xspline
+    pip install -e ".[test,docs]"
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..9b03839
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,28 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "limetr"
+version = "0.1.1"
+description = "Robust linear mixed effects model"
+readme = "REDME.rst"
+requires-python = ">=3.10"
+license = { file = "LICENSE" }
+authors = [
+    { name = "IHME Math Sciences", email = "ihme.math.sciences@gmail.com" },
+]
+dependencies = ["numpy>=1.25.1", "scipy>=1.11.1", "matplotlib>=3.7.2", "spmat<0.1.0"]
+
+[project.optional-dependencies]
+test = ["pytest", "pytest-cov"]
+docs = ["sphinx", "sphinx-autodoc-typehints", "furo"]
+
+[project.urls]
+github = "https://github.com/zhengp0/limetr"
+
+[tool.sphinx]
+project = "limetr"
+author = "IHME Math Sciences"
+copyright = "2023, IHME Math Sciences"
+version = "0.1.1"
\ No newline at end of file
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 1ae2eb2..0000000
--- a/setup.py
+++ /dev/null
@@ -1,52 +0,0 @@
-import sys
-from pathlib import Path
-from setuptools import setup, find_packages
-
-
-if __name__ == '__main__':
-    base_dir = Path(__file__).parent
-    src_dir = base_dir/'src'/'limetr'
-
-    sys.path.insert(0, src_dir.as_posix())
-    import __about__ as about
-
-    with (base_dir/'README.rst').open() as f:
-        long_description = f.read()
-
-    install_requirements = [
-        'numpy',
-        'scipy',
-        'spmat',
-        'matplotlib'
-    ]
-
-    test_requirements = [
-        'pytest',
-        'pytest-mock',
-    ]
-
-    doc_requirements = []
-
-    setup(name=about.__title__,
-          version=about.__version__,
-
-          description=about.__summary__,
-          long_description=long_description,
-          license=about.__license__,
-          url=about.__uri__,
-
-          author=about.__author__,
-          author_email=about.__email__,
-
-          package_dir={'': 'src'},
-          packages=find_packages(where='src'),
-          include_package_data=True,
-
-          install_requires=install_requirements,
-          tests_require=test_requirements,
-          extras_require={
-              'docs': doc_requirements,
-              'test': test_requirements,
-              'dev': doc_requirements + test_requirements
-          },
-          zip_safe=False,)
diff --git a/src/limetr/__about__.py b/src/limetr/__about__.py
deleted file mode 100644
index 6ec36bb..0000000
--- a/src/limetr/__about__.py
+++ /dev/null
@@ -1,16 +0,0 @@
-__all__ = [
-    "__title__", "__summary__", "__uri__", "__version__", "__author__",
-    "__email__", "__license__", "__copyright__",
-]
-
-__title__ = "limetr"
-__summary__ = "limetr: linear mixed effects model with trimming."
-__uri__ = "https://github.com/zhengp0/limetr"
-
-__version__ = "0.1.1"
-
-__author__ = "Peng Zheng"
-__email__ = "zhengp@uw.eud"
-
-__license__ = "MIT License"
-__copyright__ = f"Copyright 2020 {__author__}"