diff --git a/src/bin/shipyard_airflow/tox.ini b/src/bin/shipyard_airflow/tox.ini
index 119f9591..e2e43c12 100644
--- a/src/bin/shipyard_airflow/tox.ini
+++ b/src/bin/shipyard_airflow/tox.ini
@@ -60,6 +60,7 @@ commands = oslopolicy-sample-generator --config-file=generator/policy-generator.
 
 [testenv:gen_all]
 # Combined to make these run together instead of setting up separately
+basepython=python3
 setenv=
   SLUGIFY_USES_TEXT_UNIDECODE=yes
 commands =