diff --git a/plot_toy_example.py b/plot_toy_example.py
index 3e66719..5cd0f09 100644
--- a/plot_toy_example.py
+++ b/plot_toy_example.py
@@ -13,7 +13,7 @@
 import numpy as np
 import matplotlib.pyplot as plt
 from sklearn.linear_model import Lasso
-from pyowl import OwlRegressor
+from pyowl.pyowl import OwlRegressor
 
 n_samples = 10
 n_features = 100
diff --git a/pyowl/__init__.py b/pyowl/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/fista.py b/pyowl/fista.py
similarity index 100%
rename from fista.py
rename to pyowl/fista.py
diff --git a/loss.py b/pyowl/loss.py
similarity index 100%
rename from loss.py
rename to pyowl/loss.py
diff --git a/pyowl.py b/pyowl/pyowl.py
similarity index 99%
rename from pyowl.py
rename to pyowl/pyowl.py
index c7d423f..50492ce 100644
--- a/pyowl.py
+++ b/pyowl/pyowl.py
@@ -11,8 +11,8 @@
 from sklearn.isotonic import isotonic_regression
 from sklearn.preprocessing import LabelBinarizer
 
-from fista import fista
-from loss import get_loss
+from pyowl.fista import fista
+from pyowl.loss import get_loss
 
 
 def prox_owl(v, w):
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..887b771
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,4 @@
+matplotlib==2.2.3
+numpy==1.15.1
+scikit-learn==0.19.2
+scipy==1.1.0
\ No newline at end of file
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..64c1120
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,14 @@
+from setuptools import find_packages
+from setuptools import setup
+
+setup(name='pyowl',
+      version='0.1',
+      description='pyowl: Ordered Weighted L1 Regularization in Python',
+      long_description=open('README.md').read(),
+      url='https://github.com/vene/pyowl',
+      packages=find_packages(),
+      install_requires=[
+            "numpy==1.15.1",
+            "scikit-learn==0.19.2",
+            "scipy==1.1.0"
+      ])
diff --git a/test_pyowl.py b/tests/test_pyowl.py
similarity index 97%
rename from test_pyowl.py
rename to tests/test_pyowl.py
index 3dec713..6b75456 100644
--- a/test_pyowl.py
+++ b/tests/test_pyowl.py
@@ -3,7 +3,7 @@
 
 import numpy as np
 from numpy.testing import assert_array_almost_equal
-from pyowl import prox_owl
+from pyowl.pyowl import prox_owl
 
 rng = np.random.RandomState(0)