diff --git a/.zuul.yaml b/.zuul.yaml
index d43343a..b1c8faf 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -1,6 +1,6 @@
 - job:
     name: heat-functional-convg-queens
-    parent: heat-functional-convg-mysql-lbaasv2
+    parent: heat-functional-convg-mysql-lbaasv2-py3
     nodeset: legacy-ubuntu-xenial
     override-checkout: stable/queens
     vars:
@@ -13,10 +13,11 @@
     nodeset: legacy-ubuntu-xenial
     vars:
       branch_override: stable/queens
+      use_python3: 1
 
 - job:
     name: heat-functional-convg-rocky
-    parent: heat-functional-convg-mysql-lbaasv2
+    parent: heat-functional-convg-mysql-lbaasv2-py3
     override-checkout: stable/rocky
     nodeset: legacy-ubuntu-xenial
     vars:
@@ -29,10 +30,11 @@
     nodeset: legacy-ubuntu-xenial
     vars:
       branch_override: stable/rocky
+      use_python3: 1
 
 - job:
     name: heat-functional-convg-stein
-    parent: heat-functional-convg-mysql-lbaasv2
+    parent: heat-functional-convg-mysql-lbaasv2-py3
     override-checkout: stable/stein
     nodeset: legacy-ubuntu-xenial
     vars:
@@ -45,10 +47,11 @@
     nodeset: legacy-ubuntu-xenial
     vars:
       branch_override: stable/stein
+      use_python3: 1
 
 - job:
     name: heat-functional-convg-train
-    parent: heat-functional-convg-mysql-lbaasv2
+    parent: heat-functional-convg-mysql-lbaasv2-py3
     override-checkout: stable/train
     nodeset: legacy-ubuntu-xenial
     vars:
@@ -61,6 +64,7 @@
     nodeset: legacy-ubuntu-xenial
     vars:
       branch_override: stable/train
+      use_python3: 1
 
 - project:
     templates:
diff --git a/setup.cfg b/setup.cfg
index 3bdd080..8776610 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -13,10 +13,10 @@ classifier =
     License :: OSI Approved :: Apache Software License
     Operating System :: POSIX :: Linux
     Programming Language :: Python
-    Programming Language :: Python :: 2
-    Programming Language :: Python :: 2.7
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.5
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
 
 keywords =
     setup
diff --git a/tox.ini b/tox.ini
index 45e17be..cf89710 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,11 @@
 [tox]
-envlist = py27,py35,pep8
-minversion = 0.1
+envlist = py37,pep8
+minversion = 3.1.1
 skipsdist = True
+ignore_basepython_conflict = True
 
 [testenv]
+basepython = python3
 userdevelop = True
 setenv = VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/requirements.txt
@@ -12,7 +14,6 @@ commands = bash -c 'if [ ! -d ./.testrepository ] ; then testr init ; fi'
            testr run {posargs}
 
 [testenv:pep8]
-basepython = python3
 setenv =
     PYTHONPATH = .
 commands =
@@ -26,7 +27,6 @@ commands =
     check-uuid --fix --package heat_tempest_plugin
 
 [testenv:venv]
-basepython = python3
 commands = {posargs}
 
 [flake8]