diff --git a/roles/run-tempest/defaults/main.yaml b/roles/run-tempest/defaults/main.yaml
index 79df3e1..5867b6c 100644
--- a/roles/run-tempest/defaults/main.yaml
+++ b/roles/run-tempest/defaults/main.yaml
@@ -4,3 +4,6 @@
 tempest_black_regex: ''
 tox_extra_args: ''
 tempest_test_timeout: ''
+stable_constraints_file: "{{ devstack_base_dir }}/requirements/upper-constraints.txt"
+target_branch: "{{ zuul.branch }}"
+tempest_tox_environment: {}