diff --git a/setup.cfg b/setup.cfg
index 742e1f6..43d8c0d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -52,7 +52,7 @@ types =
 
 [options.packages.find]
 exclude =
-    tests
+    tests*
 
 [flake8]
 exclude = venv/*,tox/*,docs/*,testproject/*,build/*