diff --git a/tox.ini b/tox.ini
index cb8d16d..a12bef0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,6 @@
 [tox]
-envlist = pep8,py27,py34,py35,py36
+envlist = pep8,py3
 skipsdist = True
-skip_missing_interpreters = True
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
@@ -10,20 +9,12 @@ install_command =
   pip install {opts} {packages}
 commands = nosetests {posargs} {toxinidir}/unit_tests
 
-[testenv:py34]
-basepython = python3.4
-deps = -r{toxinidir}/test-requirements.txt
-
-[testenv:py35]
-basepython = python3.5
-deps = -r{toxinidir}/test-requirements.txt
-
-[testenv:py36]
-basepython = python3.6
+[testenv:py3]
+basepython = python3
 deps = -r{toxinidir}/test-requirements.txt
 
 [testenv:pep8]
-basepython = python3.6
+basepython = python3
 deps = -r{toxinidir}/test-requirements.txt
 commands = flake8 {posargs} zaza unit_tests