diff --git a/tests/__init__.py b/tests/__init__.py
index 0a2550c..b7536f4 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,3 +1,5 @@
 # The COPYRIGHT file at the top level of this repository contains the full
 # copyright notices and license terms.
 from .test_stock_lot_quantity import suite
+
+__all__ = ['suite']