diff --git a/.testr.conf b/.testr.conf
index 7388cc3..90c80c1 100644
--- a/.testr.conf
+++ b/.testr.conf
@@ -6,3 +6,4 @@ test_command=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \
 
 test_id_option=--load-list $IDFILE
 test_list_option=--list
+group_regex=([^\.]+\.)+