diff --git a/.zuul.yaml b/.zuul.yaml
index 5e7522e..18fdc52 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -1,5 +1,7 @@
 ---
 - project:
+    vars:
+      ensure_tox_version: '<4'
     check:
       jobs:
         - openstack-tox-linters
@@ -37,7 +39,7 @@
     parent: tox
     description: |
       Run pylint test for k8sapp-oran-o2
-    nodeset: ubuntu-xenial
+    nodeset: ubuntu-bionic
     required-projects:
       - starlingx/config
       - starlingx/fault
diff --git a/python-k8sapp-oran-o2/k8sapp_oran_o2/tox.ini b/python-k8sapp-oran-o2/k8sapp_oran_o2/tox.ini
index 766011f..572a185 100644
--- a/python-k8sapp-oran-o2/k8sapp_oran_o2/tox.ini
+++ b/python-k8sapp-oran-o2/k8sapp_oran_o2/tox.ini
@@ -19,7 +19,7 @@ distshare={toxworkdir}/.tox/distshare
 sitepackages = False
 
 # tox is silly... these need to be separated by a newline....
-whitelist_externals = bash
+allowlist_externals = bash
                       find
 
 install_command = pip install \
diff --git a/tox.ini b/tox.ini
index 072d3d3..e0214d6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -15,7 +15,7 @@ setenv =
 deps =
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/test-requirements.txt
-whitelist_externals =
+allowlist_externals =
   bash
 
 passenv =