diff --git a/setup.cfg b/setup.cfg
index b2a4e50..8adf2f0 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -25,6 +25,9 @@ addopts =
     --ignore docs/conf.py
     --import-mode=importlib
 
+[coverage:report]
+include = src/*
+
 [options]
 package_dir=
     =src