diff --git a/.stestr.conf b/.stestr.conf
index 728dfb3e..fef4726f 100644
--- a/.stestr.conf
+++ b/.stestr.conf
@@ -1,4 +1,4 @@
 [DEFAULT]
 test_path=${OS_TEST_PATH}
 top_dir=./
-
+group_regex=([^\.]+\.)+