diff --git a/tox.ini b/tox.ini
index d5a5a36..6728173 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,6 +13,7 @@ setenv = VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/test-requirements.txt
 
 [testenv:linters]
+basepython = python3
 whitelist_externals = bash
 commands =
   bash -c "find {toxinidir}        \
@@ -23,6 +24,7 @@ commands =
   bash -c "ls extras/scripts/*.sh | xargs bashate -v {posargs}"
 
 [testenv:pep8]
+basepython = python3
 usedevelop = False
 skip_install = True
 deps =
@@ -31,4 +33,5 @@ commands =
     pep8
 
 [testenv:venv]
+basepython = python3
 commands = {posargs}