diff --git a/tox.ini b/tox.ini
index 33503d90..98d53d45 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,9 +2,8 @@
 # This file is managed centrally by release-tools and should not be modified
 # within individual charm repos.
 [tox]
-envlist = pep8,py27,py35,py36
+envlist = pep8,py3
 skipsdist = True
-skip_missing_interpreters = True
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
@@ -18,12 +17,6 @@ whitelist_externals = juju
 passenv = HOME TERM AMULET_* CS_API_*
 deps = -r{toxinidir}/test-requirements.txt
 
-[testenv:py27]
-basepython = python2.7
-deps = -r{toxinidir}/requirements.txt
-       -r{toxinidir}/test-requirements.txt
-commands = /bin/true
-
 [testenv:py35]
 basepython = python3.5
 deps = -r{toxinidir}/requirements.txt
@@ -34,6 +27,11 @@ basepython = python3.6
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 
+[testenv:py3]
+basepython = python3
+deps = -r{toxinidir}/requirements.txt
+       -r{toxinidir}/test-requirements.txt
+
 [testenv:pep8]
 basepython = python3
 deps = -r{toxinidir}/requirements.txt