diff --git a/setup.cfg b/setup.cfg
index b295b3118..239049f45 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -32,6 +32,7 @@ python_requires = >= 3.5
 packages = find:
 package_dir =
     = src
+test_suite = tests
 
 [options.packages.find]
 where = src