diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 0000000..7634cb3
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,12 @@
+[paths]
+source =
+    build
+
+[run]
+branch = true
+source =
+    build
+
+[report]
+precision = 2
+
diff --git a/tox.ini b/tox.ini
index 580a5c9..e031f78 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,7 +14,10 @@
     coverage
     pytest
     pytest-cov
+
+#pytest --cov --cov-append
 commands =
-    pytest --cov --cov-append
+    coverage run --source=build setup.py test
+    coverage report
     codecov
 passenv = CI TRAVIS TRAVIS_*