diff --git a/python/MANIFEST.in b/python/MANIFEST.in
index 6c93d64..edabf53 100644
--- a/python/MANIFEST.in
+++ b/python/MANIFEST.in
@@ -2,6 +2,7 @@ include stan/unix/*.stan
 include stan/win/*.stan
 include LICENSE
 include requirements.txt
+include pyproject.toml
 
 # Ensure in-place built models do not get included in the source dist.
 prune fbprophet/stan_model
diff --git a/python/pyproject.toml b/python/pyproject.toml
new file mode 100644
index 0000000..b69648a
--- /dev/null
+++ b/python/pyproject.toml
@@ -0,0 +1,2 @@
+[build-system]
+requires = ["Cython>=0.22", "numpy>=1.10.0", "pystan>=2.14"]
diff --git a/python/setup.py b/python/setup.py
index 28c7b3b..a769822 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -9,7 +9,7 @@ from pkg_resources import (
     add_activation_listener,
     require,
 )
-from setuptools import setup
+from setuptools import setup, find_packages
 from setuptools.command.build_py import build_py
 from setuptools.command.develop import develop
 from setuptools.command.test import test as test_command
@@ -19,8 +19,7 @@ PLATFORM = 'unix'
 if platform.platform().startswith('Win'):
     PLATFORM = 'win'
 
-SETUP_DIR = os.path.dirname(os.path.abspath(__file__))
-MODEL_DIR = os.path.join(SETUP_DIR, 'stan', PLATFORM)
+MODEL_DIR = os.path.join('stan', PLATFORM)
 MODEL_TARGET_DIR = os.path.join('fbprophet', 'stan_model')
 
 
@@ -100,18 +99,16 @@ setup(
     name='fbprophet',
     version='0.4',
     description='Automatic Forecasting Procedure',
-    url='facebook.github.io/prophet/',
+    url='https://facebook.github.io/prophet/',
     author='Sean J. Taylor <sjt@fb.com>, Ben Letham <bletham@fb.com>',
     author_email='sjt@fb.com',
     license='BSD',
-    packages=['fbprophet', 'fbprophet.tests'],
+    packages=find_packages(),
     setup_requires=[
     ],
     install_requires=install_requires,
     zip_safe=False,
     include_package_data=True,
-    # For Python 3, Will enforce that tests are run after a build.
-    use_2to3=True,
     cmdclass={
         'build_py': BuildPyCommand,
         'develop': DevelopCommand,