--- a/setup.cfg
+++ b/setup.cfg
@@ -30,7 +30,10 @@ zip_safe = False
 
 [options.packages.find]
 where = src
-exclude = exampleproj
+exclude = 
+	exampleproj
+	*.tests
+	*.tests.*
 
 [options.package_data]
 incremental = py.typed
