diff --git a/.coveragerc b/.coveragerc
index 2b1651a..afda56a 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -1,7 +1,13 @@
 [run]
 branch = true
+parallel = true
 source = picobox
 
+[paths]
+source =
+   src/
+   */site-packages/
+
 [report]
 exclude_lines =
     # __repr__ is used for debug purposes and is not something we want to
diff --git a/setup.py b/setup.py
index cf013ae..7c9f265 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,8 @@
     license='MIT',
     author='Ihor Kalnytskyi',
     author_email='ihor@kalnytskyi.com',
-    packages=setuptools.find_packages(exclude=['docs', 'tests*']),
+    packages=setuptools.find_packages(where='src'),
+    package_dir={'': 'src'},
     use_scm_version={
         'root': here,
     },
diff --git a/picobox/__init__.py b/src/picobox/__init__.py
similarity index 100%
rename from picobox/__init__.py
rename to src/picobox/__init__.py
diff --git a/picobox/_box.py b/src/picobox/_box.py
similarity index 100%
rename from picobox/_box.py
rename to src/picobox/_box.py
diff --git a/picobox/_scopes.py b/src/picobox/_scopes.py
similarity index 100%
rename from picobox/_scopes.py
rename to src/picobox/_scopes.py
diff --git a/picobox/_stack.py b/src/picobox/_stack.py
similarity index 100%
rename from picobox/_stack.py
rename to src/picobox/_stack.py
diff --git a/tox.ini b/tox.ini
index a3c70b6..659f853 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,6 +7,7 @@ deps =
     pytest
 commands =
     {envpython} -m coverage run -m pytest --strict {posargs:}
+    {envpython} -m coverage combine
     {envpython} -m coverage report -m
 
 [testenv:metadata]