diff --git a/ansible/roles/kolla-ansible/defaults/main.yml b/ansible/roles/kolla-ansible/defaults/main.yml
index f0db8379a..4d2496188 100644
--- a/ansible/roles/kolla-ansible/defaults/main.yml
+++ b/ansible/roles/kolla-ansible/defaults/main.yml
@@ -19,6 +19,10 @@ kolla_ansible_venv: "{{ ansible_env['PWD'] }}/kolla-venv"
 # remotely on the target nodes. If None, no virtualenv will be used.
 kolla_ansible_target_venv:
 
+# Upper constraints file which is passed to pip when installing packages
+# into the kolla-ansible venv.
+kolla_upper_constraints_file:
+
 # Password to use to encrypt the passwords.yml file.
 kolla_ansible_vault_password:
 
diff --git a/ansible/roles/kolla/defaults/main.yml b/ansible/roles/kolla/defaults/main.yml
index 82adc1402..3d6bf0a27 100644
--- a/ansible/roles/kolla/defaults/main.yml
+++ b/ansible/roles/kolla/defaults/main.yml
@@ -15,6 +15,10 @@ kolla_source_version:
 # Virtualenv directory where Kolla will be installed.
 kolla_venv: "{{ ansible_env['PWD'] }}/kolla-venv"
 
+# Upper constraints file which is passed to pip when installing packages
+# into the kolla venv.
+kolla_upper_constraints_file:
+
 # Directory where Kolla config files will be installed.
 kolla_build_config_path: