diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..d0dbb5a
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,40 @@
+[build-system]
+requires = ["setuptools>=42", "wheel", "cython", "numpy"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "tools21cm"
+version = "2.2.6"
+authors = [
+    { name="Sambit Giri", email="sambit.giri@gmail.com" }
+]
+description = "A package for 21cm tools"
+readme = "README.md"
+requires-python = ">=3.6"
+dependencies = [
+    "numpy",
+    # Add other dependencies from requirements.txt here
+]
+
+[tool.setuptools]
+packages = ["tools21cm"]
+package-dir = {"" = "src"}
+include-package-data = true
+
+[tool.setuptools.package-data]
+tools21cm = ["input_data/*"]
+
+[tool.setuptools.setup-requires]
+setuptools = ">=18.0"
+cython = "*"
+numpy = "*"
+
+[tool.setuptools.ext-modules]
+tools21cm.ViteBetti_cython = {
+    sources = ["src/tools21cm/ViteBetti_cython.pyx"],
+    language = "c++",
+    include_dirs = ["numpy.get_include()"],
+}
+
+[tool.cythonize]
+language_level = 3
diff --git a/update_pypi.sh b/update_pypi.sh
index d3dbbbd..50479ee 100644
--- a/update_pypi.sh
+++ b/update_pypi.sh
@@ -8,7 +8,7 @@ python setup.py sdist bdist_wheel
 ls dist
 
 ## Upload the distribution files to pypi’s test server ##
-python -m twine upload --repository-url https://test.pypi.org/legacy/ dist/*
+# python -m twine upload --repository-url https://test.pypi.org/legacy/ dist/*
 ## Check the upload on the test.pypi server: ##
 ## https://test.pypi.org/project/PACKAGE/VERSION/ ##