diff --git a/setup.py b/setup.py
index 46e8789..31541b4 100644
--- a/setup.py
+++ b/setup.py
@@ -1,28 +1,31 @@
 from setuptools import setup
 
 
 def parse_requirements():
     requirements = []
     with open('requirements.txt') as f:
         for line in f.readlines():
             line = line.strip()
             if not line or line.startswith('#'):
                 continue
             requirements.append(line)
 
     return requirements
 
 
 setup(
     name='swh.model',
     description='Software Heritage data model',
     author='Software Heritage developers',
     author_email='swh-devel@inria.fr',
     url='https://forge.softwareheritage.org/diffusion/DMOD/',
-    packages=['swh.model'],  # packages's modules
+    packages=[
+        'swh.model', 'swh.model.fields',
+        'swh.model.tests', 'swh.model.tests.fields',
+    ],  # packages's modules
     scripts=[],   # scripts to package
     install_requires=parse_requirements(),
     setup_requires=['vcversioner'],
     vcversioner={},
     include_package_data=True,
 )