diff --git a/.gitignore b/.gitignore
index ce62fc6c..30d2e11f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ build/
 dist/
 *.egg
 *.egg-info
+xfaster/_version.py
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000..fa55b729
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,22 @@
+[build-system]
+requires = ["setuptools", "setuptools-scm"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "xfaster"
+description = "A fast power spectrum and likelihood estimator for CMB datasets"
+readme = "README.rst"
+requires-python = ">=3.0"
+urls = {source = "https://github.com/SPIDERCMB/xfaster"}
+license = {file = "LICENSE"}
+dynamic = ["version"]
+dependencies = ["numpy>1.17.5", "healpy", "camb", "emcee", "h5py"]
+
+[project.scripts]
+xfaster = "xfaster:xfaster_main"
+
+[tool.setuptools]
+packages = ["xfaster"]
+
+[tool.setuptools_scm]
+write_to = "xfaster/_version.py"
diff --git a/setup.py b/setup.py
deleted file mode 100644
index bcafcb79..00000000
--- a/setup.py
+++ /dev/null
@@ -1,37 +0,0 @@
-import os
-
-from setuptools import setup
-
-
-def read(rel_path):
-    # type: (str) -> str
-    here = os.path.abspath(os.path.dirname(__file__))
-    # intentionally *not* adding an encoding option to open, See:
-    #   https://github.com/pypa/virtualenv/issues/201#issuecomment-3145690
-    with open(os.path.join(here, rel_path)) as fp:
-        return fp.read()
-
-
-def get_version(rel_path):
-    # type: (str) -> str
-    for line in read(rel_path).splitlines():
-        if line.startswith("__version__"):
-            # __version__ = "0.9"
-            delim = '"' if '"' in line else "'"
-            return line.split(delim)[1]
-    raise RuntimeError("Unable to find version string.")
-
-
-setup(
-    name="xfaster",
-    version=get_version("xfaster/__init__.py"),
-    description="A fast power spectrum and likelihood estimator for CMB datasets",
-    long_description=read("README.rst"),
-    license="MIT",
-    url="https://github.com/SPIDERCMB/xfaster",
-    packages=["xfaster"],
-    package_dir={"xfaster": "xfaster"},
-    entry_points={"console_scripts": ["xfaster=xfaster:xfaster_main"]},
-    install_requires=["numpy>1.17.5", "healpy", "camb", "emcee", "h5py"],
-    python_requires=">=3.0",
-)
diff --git a/xfaster/__init__.py b/xfaster/__init__.py
index 0ac7e792..5feec9a5 100644
--- a/xfaster/__init__.py
+++ b/xfaster/__init__.py
@@ -4,4 +4,4 @@
 from .parse_tools import load_and_parse, save
 from .spec_tools import get_camb_cl
 
-__version__ = "1.2.0"
+from ._version import __version__