diff --git a/playbooks/legacy/manila-ui-dsvm/run.yaml b/playbooks/legacy/manila-ui-dsvm/run.yaml
index ba46d126..b283afc8 100644
--- a/playbooks/legacy/manila-ui-dsvm/run.yaml
+++ b/playbooks/legacy/manila-ui-dsvm/run.yaml
@@ -63,6 +63,8 @@
           export DEVSTACK_GATE_NEUTRON=1
           export DEVSTACK_PROJECT_FROM_GIT="python-manilaclient"
           export PROJECTS="openstack/manila-tempest-plugin $PROJECTS"
+          export DEVSTACK_GATE_USE_PYTHON3=True
+          export PYTHON3_VERSION="3.6"
 
           # Keep localrc to be able to set some vars in pre_test_hook
           export KEEP_LOCALRC=1