diff --git a/tox.ini b/tox.ini
index efc7b47..49cf7db 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,9 +17,11 @@ commands = /bin/bash run_tests.sh -N --no-pep8 {posargs}
 setenv = DJANGO_SETTINGS_MODULE=trove_dashboard.test.settings
 
 [testenv:pep8]
+basepython = python3
 commands = flake8
 
 [testenv:venv]
+basepython = python3
 commands = {posargs}
 
 [testenv:py35dj20]
@@ -32,15 +34,18 @@ basepython = python2.7
 commands = /bin/bash run_tests.sh -N --integration --selenium-headless {posargs}
 
 [testenv:cover]
+basepython = python3
 commands = python setup.py testr --coverage --testr-args='{posargs}'
 
 [testenv:docs]
+basepython = python3
 commands = python setup.py build_sphinx
 
 [testenv:debug]
 commands = oslo_debug_helper {posargs}
 
 [testenv:releasenotes]
+basepython = python3
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
 
 [flake8]
diff --git a/trove_dashboard/content/database_configurations/config_param_manager.py b/trove_dashboard/content/database_configurations/config_param_manager.py
index fe2ec90..ef82b17 100644
--- a/trove_dashboard/content/database_configurations/config_param_manager.py
+++ b/trove_dashboard/content/database_configurations/config_param_manager.py
@@ -19,6 +19,7 @@ from django.utils.translation import ugettext_lazy as _
 from trove_dashboard import api
 
 from oslo_serialization import jsonutils
+from six.moves import builtins
 
 
 def get(request, configuration_group_id):
@@ -185,7 +186,7 @@ def adjust_type(data_type, value):
     if data_type == "float":
         new_value = float(value)
     elif data_type == "long":
-        new_value = long(value)
+        new_value = builtins.int(value)
     elif data_type == "integer":
         new_value = int(value)
     else: